fix(ci): require JVM 17+ (Gradle 9.x minimum)

Author: boutetnico

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java-version: ["11", "17", "21"]
+        java-version: ["17", "21"]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        java-version: ["11", "21"]
+        java-version: ["17", "21"]
 
     steps:
       - uses: actions/checkout@v4