Update deprecated action package

Author: tanishisherewithhh

.github/workflows/gradle.yml

@@ -35,7 +35,7 @@ jobs:
 
       - name: capture build artifacts
         if: ${{ runner.os == 'Linux' && matrix.java == '21' }} # Only upload artifacts built from the latest java on one OS
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Dynamichud
           path: build/libs/