Add missing dependencies "@babel/generator", "common-tags"

Fixes #1070

Author: elliottsj

CHANGELOG.md

@@ -6,6 +6,8 @@
   - Use generated Typescript types via client:codegen [#1016](https://github.com/apollographql/apollo-tooling/pull/1016)
   - Remove default `--tag=current` for some client commands that used it [#1062](https://github.com/apollographql/apollo-tooling/pull/1062)
   - Add missing dependency `@oclif/errors` [#1068](https://github.com/apollographql/apollo-tooling/pull/1068)
+- `apollo-codegen-flow`
+  - Add missing dependencies `@babel/generator`, `common-tags` [#1071](https://github.com/apollographql/apollo-tooling/pull/1071)
 
 # `apollo@2.5.3`
 

package-lock.json

@@ -17,10 +17,12 @@
     "npm": ">=6"
   },
   "dependencies": {
+    "@babel/generator": "7.3.4",
     "@babel/types": "7.3.4",
     "apollo-codegen-core": "file:../apollo-codegen-core",
     "apollo-env": "file:../apollo-env",
     "change-case": "^3.0.1",
+    "common-tags": "^1.5.1",
     "inflected": "^2.0.3"
   },
   "jest": {