ci: Automate releases

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+name: Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      releaseVersion:
+        description: "Release version (e.g. 1.0.0)"
+        required: true
+      nextVersion:
+        description: "Next snapshot version (e.g. 1.0.1-SNAPSHOT)"
+        required: true
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ssh-key: ${{ secrets.GIT_SSH_KEY }}
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v4
+        with:
+          java-version: '11'
+          distribution: 'temurin'
+          cache: 'maven'
+          server-id: central
+          server-username: MAVEN_CENTRAL_TOKEN_USER
+          server-password: MAVEN_CENTRAL_TOKEN_PASS
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg-passphrase: GPG_PASSPHRASE
+
+      - name: Configure Git
+        run: |
+          git config user.name "GitHub Actions"
+          git config user.email "actions@github.com"
+
+      - name: Release
+        run: mvn -B release:prepare release:perform -DreleaseVersion=${{ github.event.inputs.releaseVersion }} -DdevelopmentVersion=${{ github.event.inputs.nextVersion }}
+        env:
+          MAVEN_CENTRAL_TOKEN_USER: ${{ secrets.MAVEN_CENTRAL_TOKEN_USER }}
+          MAVEN_CENTRAL_TOKEN_PASS: ${{ secrets.MAVEN_CENTRAL_TOKEN_PASS }}
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}