Bump gradle/actions from 4 to 6 (#7)

Bumps [gradle/actions](https://github.com/gradle/actions) from 4 to 6.
- [Release notes](https://github.com/gradle/actions/releases)
- [Commits](gradle/actions@v4...v6)

---
updated-dependencies:
- dependency-name: gradle/actions
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci-lint.yml

@@ -29,7 +29,7 @@ jobs:
           cache: gradle
 
       - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Run Checkstyle
         run: ./gradlew --no-daemon checkstyleMain checkstyleTest

.github/workflows/ci-tests-and-coverage.yml

@@ -29,7 +29,7 @@ jobs:
           cache: gradle
 
       - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Run tests and generate coverage report
         run: ./gradlew --no-daemon test jacocoTestReport

.github/workflows/release-package.yml

@@ -26,7 +26,7 @@ jobs:
           cache: gradle
 
       - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Build distributable jar
         run: ./gradlew --no-daemon clean shadowJar