fix: Update dependency installation to use stable package instead of GitHub repo

Author: weilycoder

.github/workflows/verify.yml

@@ -21,7 +21,7 @@ jobs:
       uses: actions/setup-python@v4
 
     - name: Install dependencies
-      run: pip3 install -U git+https://github.com/online-judge-tools/verification-helper.git@master
+      run: pip3 install online-judge-verify-helper
 
     - name: Run tests
       env: