Bump tibdex/github-app-token from 1.3.0 to 1.4

Bumps [tibdex/github-app-token](https://github.com/tibdex/github-app-token) from 1.3.0 to 1.4.
- [Release notes](https://github.com/tibdex/github-app-token/releases)
- [Commits](tibdex/github-app-token@v1.3.0...v1.4)

---
updated-dependencies:
- dependency-name: tibdex/github-app-token
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/swift-dependency-updater.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - name: Generate token
       id: generate_token
-      uses: tibdex/github-app-token@v1.3.0
+      uses: tibdex/github-app-token@v1.4
       with:
         app_id: ${{ secrets.APP_ID }} # These two secrets need to be added
         private_key: ${{ secrets.APP_PRIVATE_KEY }} # to your repository settings