Bump game-ci/unity-test-runner from 3 to 4

Bumps [game-ci/unity-test-runner](https://github.com/game-ci/unity-test-runner) from 3 to 4.
- [Release notes](https://github.com/game-ci/unity-test-runner/releases)
- [Commits](game-ci/unity-test-runner@v3...v4)

---
updated-dependencies:
- dependency-name: game-ci/unity-test-runner
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/unity-test.yml

@@ -26,7 +26,7 @@ jobs:
             Library-
 
       - name: Run tests
-        uses: game-ci/unity-test-runner@v3
+        uses: game-ci/unity-test-runner@v4
         env:
           UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}