Java 21 initial support (#1622)

* check java 17 and 21 in build

* build on regular branch push

* build on regular branch push

* build on regular branch push

* update spring boot for Java21 support

.github/workflows/branchbuild.yml

@@ -0,0 +1,54 @@
+name: "Branch build"
+on:
+    push:
+      branches:
+        - "*"
+        - "!main"
+
+jobs:
+    branch-build:
+        runs-on: ${{ matrix.os }}
+        strategy:
+            matrix:
+                os: [ ubuntu-latest, windows-latest, macos-latest ]
+                java-version: [ 17, 21 ]
+        steps:
+            -   uses: actions/checkout@v3
+            -   name: Set up JDK ${{ matrix.java-version }}
+                uses: actions/setup-java@v3
+                with:
+                    distribution: 'temurin'
+                    java-version: ${{ matrix.java-version }}
+                    architecture: x64
+            -   name: Cache Maven packages
+                uses: actions/cache@v3.3.1
+                with:
+                    path: ~/.m2
+                    key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+                    restore-keys: ${{ runner.os }}-m2-
+            -   name: Build with Maven
+                run: mvn --no-transfer-progress verify
+            -   name: "Set up QEMU"
+                if: runner.os == 'Linux'
+                uses: docker/setup-qemu-action@v2.2.0
+            -   name: "Set up Docker Buildx"
+                if: runner.os == 'Linux'
+                uses: docker/setup-buildx-action@v2
+            -   name: "Verify Docker WebGoat build"
+                if: runner.os == 'Linux'
+                uses: docker/build-push-action@v4.1.1
+                with:
+                    context: ./
+                    file: ./Dockerfile
+                    push: false
+                    build-args: |
+                        webgoat_version=${{ env.WEBGOAT_MAVEN_VERSION }}
+            -   name: "Verify Docker WebGoat desktop build"
+                uses: docker/build-push-action@v4.1.1
+                if: runner.os == 'Linux'
+                with:
+                    context: ./
+                    file: ./Dockerfile_desktop
+                    push: false
+                    build-args: |
+                        webgoat_version=${{ env.WEBGOAT_MAVEN_VERSION }} 

pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.1.0</version>
+    <version>3.1.5</version>
   </parent>
 
   <groupId>org.owasp.webgoat</groupId>