build!: update library to use Node 12 (#175)

* feat!: Update library to use Node 12 * 🦉 Updates from OwlBot post-processor See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: alexander-fenster

.github/sync-repo-settings.yaml

@@ -9,9 +9,9 @@ branchProtectionRules:
  - "ci/kokoro: System test"
  - docs
  - lint
- - test (10)
  - test (12)
  - test (14)
+ - test (16)
  - cla/google
  - windows
  - OwlBot Post Processor

.github/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
  runs-on: ubuntu-latest
  strategy:
  matrix:
- node: [10, 12, 14]
+ node: [12, 14, 16]
  steps:
  - uses: actions/checkout@v3
  - uses: actions/setup-node@v3

.kokoro/continuous/node10/common.cfg

@@ -40,26 +40,26 @@
  },
  "dependencies": {
  "@google-cloud/video-transcoder": "^1.8.1",
- "google-gax": "^2.24.1"
+ "google-gax": "^3.0.1"
  },
  "devDependencies": {
  "@types/mocha": "^9.0.0",
  "@types/node": "^16.0.0",
  "@types/sinon": "^10.0.0",
  "c8": "^7.3.0",
- "gts": "^3.0.0",
+ "gts": "^3.1.0",
  "jsdoc": "^3.6.5",
  "jsdoc-fresh": "^1.0.2",
  "jsdoc-region-tag": "^1.0.4",
  "linkinator": "^2.1.2",
- "mocha": "^8.2.1",
+ "mocha": "^9.2.2",
  "null-loader": "^4.0.0",
  "pack-n-play": "^1.0.0-2",
  "sinon": "^14.0.0",
  "ts-loader": "^9.0.0",
- "typescript": "^3.9.7"
+ "typescript": "^4.6.4"
  },
  "engines": {
- "node": ">=10.0.0"
+ "node": ">=12.0.0"
  }
 }

.kokoro/continuous/node10/docs.cfg

@@ -4,7 +4,7 @@
  "license": "Apache-2.0",
  "author": "Google LLC",
  "engines": {
- "node": ">=10"
+ "node": ">=12.0.0"
  },
  "files": [
  "*.js",