chore: update github actions configuration (#196)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2020-03-22 04:38:38,041 synthtool > Executing /tmpfs/src/git/autosynth/working_repo/synth.py.
.eslintignore
.eslintrc.yml
.github/ISSUE_TEMPLATE/bug_report.md
.github/ISSUE_TEMPLATE/feature_request.md
.github/ISSUE_TEMPLATE/support_request.md
.github/PULL_REQUEST_TEMPLATE.md
.github/publish.yml
.github/release-please.yml
.github/workflows/ci.yaml
.kokoro/common.cfg
.kokoro/continuous/node10/common.cfg
.kokoro/continuous/node10/docs.cfg
.kokoro/continuous/node10/lint.cfg
.kokoro/continuous/node10/samples-test.cfg
.kokoro/continuous/node10/system-test.cfg
.kokoro/continuous/node10/test.cfg
.kokoro/continuous/node12/common.cfg
.kokoro/continuous/node12/test.cfg
.kokoro/continuous/node8/common.cfg
.kokoro/continuous/node8/test.cfg
.kokoro/docs.sh
.kokoro/lint.sh
.kokoro/presubmit/node10/common.cfg
.kokoro/presubmit/node10/docs.cfg
.kokoro/presubmit/node10/lint.cfg
.kokoro/presubmit/node10/samples-test.cfg
.kokoro/presubmit/node10/system-test.cfg
.kokoro/presubmit/node10/test.cfg
.kokoro/presubmit/node12/common.cfg
.kokoro/presubmit/node12/test.cfg
.kokoro/presubmit/node8/common.cfg
.kokoro/presubmit/node8/test.cfg
.kokoro/presubmit/windows/common.cfg
.kokoro/presubmit/windows/test.cfg
.kokoro/publish.sh
.kokoro/release/docs.cfg
.kokoro/release/docs.sh
.kokoro/release/publish.cfg
.kokoro/samples-test.sh
.kokoro/system-test.sh
.kokoro/test.bat
.kokoro/test.sh
.kokoro/trampoline.sh
.mocharc.js
.nycrc
.prettierignore
.prettierrc
CODE_OF_CONDUCT.md
CONTRIBUTING.md
LICENSE
README.md
codecov.yaml
renovate.json
samples/README.md
2020-03-22 04:38:38,792 synthtool > Wrote metadata to synth.metadata.

```
</details>

Author: yoshi-automation

core/paginator/synth.metadata

@@ -1,233 +1,12 @@
 {
-  "updateTime": "2020-01-24T12:26:08.860984Z",
+  "updateTime": "2020-03-22T11:38:38.791994Z",
   "sources": [
     {
-      "template": {
-        "name": "node_library",
-        "origin": "synthtool.gcp",
-        "version": "2019.10.17"
+      "git": {
+        "name": "synthtool",
+        "remote": "https://github.com/googleapis/synthtool.git",
+        "sha": "7e98e1609c91082f4eeb63b530c6468aefd18cfd"
       }
     }
-  ],
-  "newFiles": [
-    {
-      "path": ".compodocrc"
-    },
-    {
-      "path": ".eslintignore"
-    },
-    {
-      "path": ".eslintrc.yml"
-    },
-    {
-      "path": ".github/ISSUE_TEMPLATE/bug_report.md"
-    },
-    {
-      "path": ".github/ISSUE_TEMPLATE/feature_request.md"
-    },
-    {
-      "path": ".github/ISSUE_TEMPLATE/support_request.md"
-    },
-    {
-      "path": ".github/PULL_REQUEST_TEMPLATE.md"
-    },
-    {
-      "path": ".github/release-please.yml"
-    },
-    {
-      "path": ".gitignore"
-    },
-    {
-      "path": ".jsdoc.js"
-    },
-    {
-      "path": ".kokoro/.gitattributes"
-    },
-    {
-      "path": ".kokoro/common.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/common.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/docs.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/lint.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/samples-test.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/system-test.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node10/test.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node12/common.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node12/test.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node8/common.cfg"
-    },
-    {
-      "path": ".kokoro/continuous/node8/test.cfg"
-    },
-    {
-      "path": ".kokoro/docs.sh"
-    },
-    {
-      "path": ".kokoro/lint.sh"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/common.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/docs.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/lint.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/samples-test.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/system-test.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node10/test.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node12/common.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node12/test.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node8/common.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/node8/test.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/windows/common.cfg"
-    },
-    {
-      "path": ".kokoro/presubmit/windows/test.cfg"
-    },
-    {
-      "path": ".kokoro/publish.sh"
-    },
-    {
-      "path": ".kokoro/release/common.cfg"
-    },
-    {
-      "path": ".kokoro/release/docs.cfg"
-    },
-    {
-      "path": ".kokoro/release/docs.sh"
-    },
-    {
-      "path": ".kokoro/release/publish.cfg"
-    },
-    {
-      "path": ".kokoro/samples-test.sh"
-    },
-    {
-      "path": ".kokoro/system-test.sh"
-    },
-    {
-      "path": ".kokoro/test.bat"
-    },
-    {
-      "path": ".kokoro/test.sh"
-    },
-    {
-      "path": ".kokoro/trampoline.sh"
-    },
-    {
-      "path": ".nycrc"
-    },
-    {
-      "path": ".prettierignore"
-    },
-    {
-      "path": ".prettierrc"
-    },
-    {
-      "path": ".repo-metadata.json"
-    },
-    {
-      "path": "CHANGELOG.md"
-    },
-    {
-      "path": "CODE_OF_CONDUCT.md"
-    },
-    {
-      "path": "CONTRIBUTING.md"
-    },
-    {
-      "path": "LICENSE"
-    },
-    {
-      "path": "README.md"
-    },
-    {
-      "path": "codecov.yaml"
-    },
-    {
-      "path": "linkinator.config.json"
-    },
-    {
-      "path": "package.json"
-    },
-    {
-      "path": "renovate.json"
-    },
-    {
-      "path": "samples/.eslintrc.yml"
-    },
-    {
-      "path": "samples/README.md"
-    },
-    {
-      "path": "samples/package.json"
-    },
-    {
-      "path": "samples/quickstart.js"
-    },
-    {
-      "path": "samples/test/test.js"
-    },
-    {
-      "path": "src/index.ts"
-    },
-    {
-      "path": "src/resource-stream.ts"
-    },
-    {
-      "path": "synth.py"
-    },
-    {
-      "path": "system-test/system.ts"
-    },
-    {
-      "path": "test/index.ts"
-    },
-    {
-      "path": "test/mocha.opts"
-    },
-    {
-      "path": "test/resource-stream.ts"
-    },
-    {
-      "path": "tsconfig.json"
-    },
-    {
-      "path": "tslint.json"
-    }
   ]
 }