chore!: upgrade to Node 14 (#891)

* docs: fix node release schedule link

Co-authored-by: Jeffrey Rennie <rennie@google.com>

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


---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Sofia Leon <sofialeon@google.com>
Co-authored-by: Aaron Abbott <aaronabbott@google.com>

Author: 3 people

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:0527a86c10b67742c409dc726ba9a31ec4e69b0006e3d7a49b0e6686c59cdaa9
-# created: 2023-05-24T20:32:43.844586914Z
+  digest: sha256:e08f9a3757808cdaf7a377e962308c65c4d7eff12db206d4fae702dd50d43430
+# created: 2023-08-03T18:46:14.719706948Z

.github/sync-repo-settings.yaml

@@ -34,7 +34,7 @@ branchProtectionRules:
     - "cla/google"
     - "docs"
     - "lint"
-    - "test (12)"
     - "test (14)"
     - "test (16)"
+    - "test (18)"
     - "system-test"

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [12, 14, 16]
+        node: [14, 16, 18]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3

.github/workflows/ci2.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 12
+          node-version: 14
       - run: npm install
       - run: npm run system-test
       - name: coverage