🦉 Updates from OwlBot post-processor

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

Author: gcf-owl-bot[bot]

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

@@ -10,10 +10,10 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 18
       - run: npm install
         working-directory: ./.github/scripts
       - uses: actions/github-script@v7

.github/workflows/response.yaml

@@ -13,7 +13,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: actions/github-script@v7
         with:
           script: |
@@ -27,7 +27,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: actions/github-script@v7
         with:
           script: |