Use Java 21 in the CI

# Conflicts:
#	.github/workflows/codeql-analysis.yml

Author: gesellix

.github/workflows/cd.yml

@@ -23,8 +23,7 @@ jobs:
         #          - windows-latest
         #          - macos-latest
         java:
-          - 11
-    #          - 17
+          - '21'
     runs-on: ${{ matrix.os }}
     timeout-minutes: 20
     steps:

.github/workflows/ci.yml

@@ -24,8 +24,7 @@ jobs:
           - windows-latest
           - macos-latest
         java:
-          - 11
-          - 17
+          - '21'
     runs-on: ${{ matrix.os }}
     timeout-minutes: 20
     steps:

.github/workflows/codeql-analysis.yml

@@ -36,6 +36,11 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/checkout@v5
+    - name: Set up JDK
+      uses: actions/setup-java@v4.7.1
+      with:
+        distribution: 'zulu'
+        java-version: '21'
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/release.yml

@@ -25,8 +25,7 @@ jobs:
         #          - windows-latest
         #          - macos-latest
         java:
-          - 11
-    #          - 17
+          - '21'
     runs-on: ${{ matrix.os }}
     timeout-minutes: 20
     steps: