unpin pip

Author: ea-rus

.github/workflows/test_prs.yml

@@ -20,7 +20,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip==22.0.4
+        python -m pip install --upgrade pip
         pip install -r requirements.txt        
         pip install -r requirements_test.txt
         pip install --no-cache-dir .