build!: update library to use Node 12 (#309)

* build!: Update library to use Node 12

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: sofisl

packages/google-cloud-billing-budgets/package.json

@@ -14,15 +14,15 @@
     "@types/sinon": "^10.0.0",
     "c8": "^7.0.0",
     "chai": "^4.2.0",
-    "gts": "^3.0.0",
+    "gts": "^3.1.0",
     "jsdoc": "^3.6.2",
     "jsdoc-fresh": "^1.0.2",
     "jsdoc-region-tag": "^1.0.2",
     "linkinator": "^2.0.0",
-    "mocha": "^8.0.0",
+    "mocha": "^9.2.2",
     "pack-n-play": "^1.0.0-2",
     "sinon": "^14.0.0",
-    "typescript": "^3.8.3"
+    "typescript": "^4.6.4"
   },
   "scripts": {
     "predocs": "npm run compile",
@@ -44,9 +44,9 @@
   },
   "license": "Apache-2.0",
   "engines": {
-    "node": ">=10"
+    "node": ">=12.0.0"
   },
   "dependencies": {
-    "google-gax": "^2.24.1"
+    "google-gax": "^3.0.1"
   }
 }

packages/google-cloud-billing-budgets/samples/package.json

@@ -9,7 +9,7 @@
   "author": "Google LLC",
   "repository": "googleapis/nodejs-billing-budgets",
   "engines": {
-    "node": ">=10"
+    "node": ">=12.0.0"
   },
   "scripts": {
     "test": "c8 mocha system-test --timeout=800000"
@@ -22,4 +22,4 @@
     "chai": "^4.2.0",
     "mocha": "^8.0.0"
   }
-}
+}