chore!: upgrade to Node 14 (#52)

* docs: fix node release schedule link

Co-authored-by: Jeffrey Rennie <[email protected]>

Source-Link: googleapis/synthtool@1a24315
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:e08f9a3757808cdaf7a377e962308c65c4d7eff12db206d4fae702dd50d43430

* chore!: upgrade to Node 14

* 🦉 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>
Co-authored-by: Sofia Leon <[email protected]>

packages/google-cloud-bigquery-migration/README.md

@@ -62,7 +62,7 @@ also contains samples.
 
 ## Supported Node.js Versions
 
-Our client libraries follow the [Node.js release schedule](https://nodejs.org/en/about/releases/).
+Our client libraries follow the [Node.js release schedule](https://github.com/nodejs/release#release-schedule).
 Libraries are compatible with all current _active_ and _maintenance_ versions of
 Node.js.
 If you are using an end-of-life version of Node.js, we recommend that you update

packages/google-cloud-bigquery-migration/package.json

@@ -39,14 +39,15 @@
     "prelint": "cd samples; npm link ../; npm i"
   },
   "dependencies": {
-    "google-gax": "^3.5.2"
+    "google-gax": "^4.0.3"
   },
   "devDependencies": {
     "@types/mocha": "^10.0.0",
-    "@types/node": "^18.0.0",
+    "@types/node": "^20.4.9",
     "@types/sinon": "^10.0.0",
-    "c8": "^7.7.2",
-    "gts": "^3.1.0",
+    "c8": "^8.0.1",
+    "gapic-tools": "^0.1.8",
+    "gts": "^5.0.0",
     "jsdoc": "^4.0.0",
     "jsdoc-fresh": "^2.0.0",
     "jsdoc-region-tag": "^2.0.0",
@@ -56,11 +57,11 @@
     "pack-n-play": "^1.0.0-2",
     "sinon": "^15.0.0",
     "ts-loader": "^9.1.2",
-    "typescript": "^4.2.4",
+    "typescript": "^5.1.6",
     "webpack": "^5.36.2",
     "webpack-cli": "^5.0.0"
   },
   "engines": {
-    "node": ">=v12.0.0"
+    "node": ">=14.0.0"
   }
 }