Bump gradle/actions from 5 to 6 in the github-actions group

Bumps the github-actions group with 1 update: [gradle/actions](https://github.com/gradle/actions).


Updates `gradle/actions` from 5 to 6
- [Release notes](https://github.com/gradle/actions/releases)
- [Commits](gradle/actions@v5...v6)

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

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

Author: dependabot[bot]

.github/workflows/publish-ayatana-maven.yml

@@ -25,7 +25,7 @@ jobs:
           distribution: 'zulu'
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Import GPG key
         run: |

.github/workflows/publish-maven.yml

@@ -25,7 +25,7 @@ jobs:
           distribution: 'zulu'
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Import GPG key
         run: |

.github/workflows/publish-minimal-maven.yml

@@ -25,7 +25,7 @@ jobs:
           distribution: 'zulu'
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@v6
 
       - name: Import GPG key
         run: |