chore(deps): bump actions/cache from 3 to 4 (#74)

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -100,7 +100,7 @@ jobs:
         run: |
           poetry config virtualenvs.create true --local
           poetry config virtualenvs.in-project true --local
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         name: Define a cache for the virtual environment based on the dependencies lock file
         with:
           path: ./.venv