deps: update actions/github-script action to v7 (#2317)

* deps: update actions/github-script action to v7

* 🦉 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>

.github/workflows/approve-readme.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'googleapis' && github.head_ref == 'autosynth-readme'
     steps:
-      - uses: actions/github-script@v6
+      - uses: actions/github-script@v7
         with:
           github-token: ${{secrets.YOSHI_APPROVER_TOKEN}}
           script: |

.github/workflows/auto-release.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     if: contains(github.head_ref, 'release-please')
     steps:
-    - uses: actions/github-script@v6
+    - uses: actions/github-script@v7
       with:
         github-token: ${{secrets.YOSHI_APPROVER_TOKEN}}
         debug: true