Bump gradle/actions from 3 to 321

Bumps [gradle/actions](https://github.com/gradle/actions) from 3 to 321.
- [Release notes](https://github.com/gradle/actions/releases)
- [Commits](gradle/actions@v3...v321)

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

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

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
 
     # Setup Gradle
     - name: Setup Gradle
-      uses: gradle/actions/setup-gradle@v3
+      uses: gradle/actions/setup-gradle@v321
 
     # Runs a single command using the runners shell
     - name: Compile and run tests on robot code
@@ -61,7 +61,7 @@ jobs:
 
     # Setup Gradle
     - name: Setup Gradle
-      uses: gradle/actions/setup-gradle@v3
+      uses: gradle/actions/setup-gradle@v321
 
     # Runs a single command using the runners shell
     - name: Run tests on robot code

.github/workflows/syntax-check.yml

@@ -41,7 +41,7 @@ jobs:
 
       # Setup Gradle
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v3
+        uses: gradle/actions/setup-gradle@v321
 
       # Runs our formatter for easier code review
       - name: Run spotlessApply