Add --use-pep517 flag in pip install

Due to warnings such as this:
DEPRECATION: psycopg2 is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at pypa/pip#8559

.github/workflows/ci.yml

@@ -72,7 +72,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install codecov -r requirements.txt -r dev-requirements.txt
+          pip install --use-pep517 codecov -r requirements.txt -r dev-requirements.txt
 
       - name: Configure sysctl limits
         run: |