switch to upload artifact v4

Author: stancecoke

.github/workflows/compile_on_commit.yml

@@ -51,7 +51,7 @@ jobs:
     - run: java -cp java make/hexToLsh.java
 
     - name: 'Upload Artifact'
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         path: ${{ github.workspace }}/output
         name: EBiCS_build_${{ github.run_number }}