Bump actions/cache from 3.0.4 to 3.0.7 (#245)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
         run: |
           echo "::set-output name=dir::$(pip cache dir)"
       - name: Restore PIP cache
-        uses: actions/cache@v3.0.4
+        uses: actions/cache@v3.0.7
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: pip-${{ steps.python.outputs.python-version }}-${{ hashFiles('requirements.txt', 'requirements_test.txt') }}