chore: revert previous node-version template updates (#2115)

* chore: revert previous node-version template updates

* chore: update ci.yaml template

* chore: update ci.yaml template node version

* chore: revert previous node-version template changes

Source-Link: googleapis/synthtool@55f9ecb
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:1d7c29870723d4d2e32870c6dcdc43d4aa93dcc6519272d025bfcf2ecd48f091

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 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: Leah E. Cole <6719667+leahecole@users.noreply.github.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:1861c5e2c9e12678f64f68c4ef449759f80c64299eb35a5e3c916eca46b0d2c4
-# created: 2025-08-13T15:27:11.205698327Z
+  digest: sha256:1d7c29870723d4d2e32870c6dcdc43d4aa93dcc6519272d025bfcf2ecd48f091
+# created: 2025-08-14T17:16:30.591542591Z

.github/workflows/ci.yaml

@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - run: node --version
       - run: npm install --engine-strict
         working-directory: .github/scripts
@@ -46,7 +46,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - run: npm install --engine-strict
       - run: npm test
         env:
@@ -57,7 +57,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - run: npm install
       - run: npm run lint
   docs:
@@ -66,7 +66,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - run: npm install
       - run: npm run docs
       - uses: JustinBeckwith/linkinator-action@v1

.github/workflows/issues-no-repro.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 18
       - run: npm install
         working-directory: ./.github/scripts
       - uses: actions/github-script@v7