remove ci changes

Author: Nava2

.github/workflows/ci.yml

@@ -3,13 +3,12 @@ on: [ push, pull_request ]
 
 jobs:
   ci:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request' || (github.event_name == 'push' && github.ref == 'refs/heads/main')
+
     strategy:
       matrix:
-        gradle-version: [ '7.6.4', '8.7', '8.12.1', 'current' ]
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
-
-    runs-on: ${{ matrix.os }}
-    if: github.event_name == 'pull_request' || (github.event_name == 'push' && github.ref == 'refs/heads/main')
+        gradle-version: [ '7.6.2', '8.0.1', '8.2.1' ]
 
     steps:
       - uses: actions/setup-java@v4