Upgrade/grails4

.github/workflows/gradle.yml

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+name: Java CI
+on:
+  push:
+    branches:
+      - master
+      - upgrade/grails4
+  pull_request:
+    branches:
+      - master
+      - upgrade/grails4
+  workflow_dispatch:
+
+permissions:
+  contents: read  #  to fetch code (actions/checkout)
+
+jobs:
+  build:
+    permissions:
+      contents: read  #  to fetch code (actions/checkout)
+      checks: write  #  to publish result as PR check (scacap/action-surefire-report)
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: ['8']
+    env:
+      WORKSPACE: ${{ github.workspace }}
+      GRADLE_OPTS: -Xmx1500m -Dfile.encoding=UTF-8
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'adopt'
+          java-version: ${{ matrix.java }}
+      - name: Run Tests
+        if: github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
+        id: tests
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: check
+      - name: Run Build
+        if: github.event_name == 'push'
+        id: build
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: build

.github/workflows/release.yml

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+name: Release
+on:
+    release:
+        types: [ published ]
+jobs:
+    release:
+        runs-on: ubuntu-latest
+        env:
+            GIT_USER_NAME: ${{ secrets.GIT_USER_NAME }}
+            GIT_USER_EMAIL: ${{ secrets.GIT_USER_EMAIL }}
+        steps:
+            -   name: Checkout repository
+                uses: actions/checkout@v2
+                with:
+                    token: ${{ secrets.GH_TOKEN }}
+            -   name: Set up JDK
+                uses: actions/setup-java@v1
+                with:
+                    java-version: 8
+            -   name: Get latest release version number
+                id: get_version
+                uses: battila7/get-version-action@v2
+            -   name: Run pre-release
+                uses: micronaut-projects/github-actions/pre-release@master
+                with:
+                    token: ${{ secrets.GITHUB_TOKEN }}
+            -   name: Publish to Sonatype OSSRH
+                id: publish
+                if: steps.assemble.outcome == 'success'
+                uses: gradle/gradle-build-action@v2
+                env:
+                    SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
+                    SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+                    SONATYPE_NEXUS_URL: ${{ secrets.SONATYPE_NEXUS_URL }}
+                    SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}
+                    SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY }}
+                    SIGNING_PASSPHRASE: ${{ secrets.SIGNING_PASSPHRASE }}
+                    SECRING_FILE: ${{ secrets.SECRING_FILE }}
+                with:
+                    arguments: -Psigning.secretKeyRingFile=${{ github.workspace }}/secring.gpg publishToSonatype closeAndReleaseSonatypeStagingRepository
+            -   name: Bump patch version by one
+                uses: actions-ecosystem/action-bump-semver@v1
+                id: bump_semver
+                with:
+                  current_version: ${{steps.get_version.outputs.version-without-v }}
+                  level: patch
+            -   name: Set version in gradle.properties
+                id: snapshotVersion
+                uses: gradle/gradle-build-action@v2
+                env:
+                    NEXT_VERSION: ${{ steps.bump_semver.outputs.new_version }}
+                with:
+                    arguments: -Pversion="${NEXT_VERSION}"
+            -   name: Commit & Push changes
+                uses: actions-js/push@master
+                with:
+                    github_token: ${{ secrets.GITHUB_TOKEN }}
+                    author_name: ${{ secrets.GIT_USER_NAME }}
+                    author_email: $${ secrets.GIT_USER_EMAIL }}
+                    message: 'Set version to next SNAPSHOT'
+            -   name: Build documentation
+                id: asciidoctor
+                uses: gradle/gradle-build-action@v2
+                env:
+                    RELEASE_VERSION: ${{ steps.get_version.outputs.version-without-v }}
+                with:
+                    arguments: -Pversion="${RELEASE_VERSION}"
+            -   name: Export Gradle Properties
+                uses: micronaut-projects/github-actions/export-gradle-properties@master
+            -   name: Publish to Github Pages
+                if: success()
+                uses: micronaut-projects/github-pages-deploy-action@master
+                env:
+                    BETA: ${{ steps.get_version.outputs.isPrerelase }}
+                    TARGET_REPOSITORY: ${{ github.repository }}
+                    GH_TOKEN: ${{ secrets.GH_TOKEN }}
+                    BRANCH: gh-pages
+                    FOLDER: build/asciidoc
+                    DOC_FOLDER: latest
+                    COMMIT_EMAIL: ${{ secrets.GIT_USER_EMAIL }}
+                    COMMIT_NAME: ${{ secrets.GIT_USER_NAME }}
+                    VERSION: ${{ steps.get_version.outputs.version-without-v }}
+            -   name: Run post-release
+                if: success()
+                uses: micronaut-projects/github-actions/post-release@master
+                with:
+                    token: ${{ secrets.GITHUB_TOKEN }}