Bump actions/github-script from 3 to 4.0.2

Bumps [actions/github-script](https://github.com/actions/github-script) from 3 to 4.0.2.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v3...v4.0.2)

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

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

Author: dependabot[bot]

.github/workflows/combine-prs.yml

@@ -30,7 +30,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/github-script@v3
+      - uses: actions/github-script@v4.0.2
         id: fetch-branch-names
         name: Fetch branch names
         with:
@@ -121,7 +121,7 @@ jobs:
           git pull origin $sourcebranches --no-edit
           git push origin $COMBINE_BRANCH_NAME
       # Creates a PR with the new combined branch
-      - uses: actions/github-script@v3
+      - uses: actions/github-script@v4.0.2
         name: Create Combined Pull Request
         with:
           github-token: ${{secrets.GITHUB_TOKEN}}