fix:在action里用的jdk版本修改为受支持的21

.github/workflows/android.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: '23'
+          java-version: '21'
 
       - name: Install libraries
         run: |

.github/workflows/linux.yml

@@ -23,7 +23,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: '23'
+          java-version: '21'
 
       # Install extra required packaged on top of ubuntu-latest
       - name: Install libraries
@@ -44,7 +44,7 @@ jobs:
 
       # Upload the staging directory as a build artifact. You will be able to download this after the build finishes.
       - name: Upload
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: Package
           path: staging

pom.xml

@@ -16,7 +16,7 @@
         <javafx.maven.plugin.version>0.0.8</javafx.maven.plugin.version>
         <javafx.version>24-ea+5</javafx.version>
         <main.class>caidanci.HelloApplication</main.class>
-        <maven.compiler.release>23</maven.compiler.release>
+        <maven.compiler.release>21</maven.compiler.release>
         <app.identifier>${main.class}</app.identifier>
         <app.description>The CaiDanCi app</app.description>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>