chore: update to jdk 21

Author: rgomezcasas

.github/workflows/workflow.yml

@@ -10,13 +10,13 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: actions/setup-java@v1
+    - uses: actions/setup-java@v3
       with:
-        java-version: 17
+        distribution: 'zulu'
+        java-version: 21
 
     - name: Assemble
       run: ./gradlew assemble --warning-mode all
 
     - name: Check
       run: ./gradlew check --warning-mode all
-

build.gradle

@@ -1,7 +1,7 @@
 apply plugin: 'java'
 
-sourceCompatibility = 17
-targetCompatibility = 17
+sourceCompatibility = 21
+targetCompatibility = 21
 
 repositories {
     mavenCentral()