Update to latest version of all github actions

.github/workflows/demo-pr-build-scan-comment.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout project sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Gradle
       uses: ./
     - name: Run build with Gradle wrapper
@@ -15,7 +15,7 @@ jobs:
       working-directory: .github/workflow-samples/kotlin-dsl
       run: ./gradlew build --scan
     - name: "Add build scan URL as PR comment"
-      uses: actions/github-script@v5
+      uses: actions/github-script@v6
       with:
         github-token: ${{secrets.GITHUB_TOKEN}}
         script: |