ci(deps): bump actions/github-script from 6 to 7 in /.github/workflows

Bumps [actions/github-script](https://github.com/actions/github-script) from 6 to 7.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v6...v7)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/dependabot-apt-update.yml

@@ -93,7 +93,7 @@ jobs:
       - name: Check for existing issues
         id: check-issues
         if: steps.check-updates.outputs.updates_available == 'true'
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           script: |
             const issueTitle = 'Outdated apt packages in workflows';
@@ -116,7 +116,7 @@ jobs:
 
       - name: Update existing issue
         if: steps.check-updates.outputs.updates_available == 'true' && env.ISSUE_EXISTS == 'true'
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           script: |
             const fs = require('fs');