ci: add implementation of caching for python dependencies

Author: CJ Steiner

.github/workflows/deploy.yml

@@ -15,7 +15,8 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v4
       with:
-        python-version: 3.x
+        python-version: '3.x'
+        cache: 'pip'
     - run: pip install virtualenv
     - run: make
     - run: make push