Bump gradle-update/update-gradle-wrapper-action from 1.0.18 to 1.0.20

Bumps [gradle-update/update-gradle-wrapper-action](https://github.com/gradle-update/update-gradle-wrapper-action) from 1.0.18 to 1.0.20.
- [Release notes](https://github.com/gradle-update/update-gradle-wrapper-action/releases)
- [Changelog](https://github.com/gradle-update/update-gradle-wrapper-action/blob/main/CHANGELOG.md)
- [Commits](gradle-update/update-gradle-wrapper-action@981c551...0407394)

---
updated-dependencies:
- dependency-name: gradle-update/update-gradle-wrapper-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/update-gradle-wrapper.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Update Gradle Wrapper
-        uses: gradle-update/update-gradle-wrapper-action@981c551b17dbcf1940b1b4435afdb79babb7c13a # v1.0.13
+        uses: gradle-update/update-gradle-wrapper-action@0407394b9d173dfc9cf5695f9f560fef6d61a5fe # v1.0.13
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           labels: dependencies