Build(deps): Bump gradle/gradle-build-action from 2.8.0 to 2.8.1

Bumps [gradle/gradle-build-action](https://github.com/gradle/gradle-build-action) from 2.8.0 to 2.8.1.
- [Release notes](https://github.com/gradle/gradle-build-action/releases)
- [Commits](https://github.com/gradle/gradle-build-action/compare/ef76a971e2fa3f867b617efd72f2fbd72cf6f8bc...b5126f31dbc19dd434c3269bf8c28c315e121da2)

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

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

.github/workflows/unit-tests.yml

@@ -25,7 +25,7 @@ jobs:
                     distribution: "temurin"
                     java-version: 17
             -   name: Run unit tests with coverage
-                uses: gradle/gradle-build-action@ef76a971e2fa3f867b617efd72f2fbd72cf6f8bc # v2.8.0
+                uses: gradle/gradle-build-action@b5126f31dbc19dd434c3269bf8c28c315e121da2 # v2.8.1
                 with:
                     arguments: testGplayDebugUnit
             -   name: Upload test artifacts