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

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: sha256:1053e41d7e29d0619500416721caffff36357aa3708074ebdfae024b38ef3a40
-# created: 2025-06-26T22:34:58.583582089Z
+  digest: sha256:1d7c29870723d4d2e32870c6dcdc43d4aa93dcc6519272d025bfcf2ecd48f091
+# created: 2025-08-14T17:16:30.591542591Z

.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