bump jvm version in gh actions too

Author: Jolanrensen

.github/workflows/generated-sources-master.yml

@@ -13,11 +13,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '11'
+          java-version: '21'
 
       - name: Run Gradle task
         run: ./gradlew :core:processKDocsMain korro

.github/workflows/generated-sources.yml

@@ -26,11 +26,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '11'
+          java-version: '21'
 
       - name: Configure Git User
         run: |