Setup CI build against Java 21 & 23

Closes gh-1472

Author: snicoll

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: CI
+on:
+  schedule:
+    - cron: '30 10 * * *'
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+jobs:
+  ci:
+    name: '${{ matrix.os.name}} | Java ${{ matrix.java.version}}'
+    if: ${{ github.repository == 'spring-projects/spring-ws' }}
+    runs-on: ${{ matrix.os.id }}
+    timeout-minutes: 60
+    strategy:
+      matrix:
+        os:
+          - id: ubuntu-latest
+            name: Linux
+        java:
+          - version: 17
+            toolchain: false
+          - version: 21
+            toolchain: true
+          - version: 23
+            toolchain: true
+        exclude:
+          - os:
+              name: Linux
+            java:
+              version: 17
+    steps:
+      - name: Prepare Windows runner
+        if: ${{ runner.os == 'Windows' }}
+        run: |
+          git config --global core.autocrlf true
+          git config --global core.longPaths true
+          Stop-Service -name Docker
+      - name: Check Out Code
+        uses: actions/checkout@v4
+      - name: Build
+        id: build
+        uses: ./.github/actions/build
+        with:
+          develocity-access-key: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
+          java-early-access: ${{ matrix.java.early-access || 'false' }}
+          java-distribution: ${{ matrix.java.distribution }}
+          java-toolchain: ${{ matrix.java.toolchain }}
+          java-version: ${{ matrix.java.version }}
+      - name: Send Notification
+        if: always()
+        uses: ./.github/actions/send-notification
+        with:
+          build-scan-url: ${{ steps.build.outputs.build-scan-url }}
+          run-name: ${{ format('{0} | {1} | Java {2}', github.ref_name, matrix.os.name, matrix.java.version) }}
+          status: ${{ job.status }}
+          webhook-url: ${{ secrets.GOOGLE_CHAT_WEBHOOK_URL }}