Drop Java 8 testing

Author: bastelfreak

.github/workflows/tests.yml

@@ -38,7 +38,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ['8', '11', '17', '21']
+        version: ['11', '17', '21']
     runs-on: ubuntu-24.04
     steps:
       - name: checkout repo