Merge pull request #147 from scikit-hep/dependabot/github_actions/act…

…ions/cache-4.0.1

chore(deps): bump actions/cache from 3.3.1 to 4.0.1

.github/workflows/main.yml

@@ -60,7 +60,7 @@ jobs:
         run: |
           echo "::set-output name=dir::$(pip cache dir)"
       - name: pip cache
-        uses: actions/cache@v3.3.1
+        uses: actions/cache@v4.0.1
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('**/setup.cfg') }}-pip-${{ hashFiles('**/setup.py') }}-pip-${{ hashFiles('**/pyproject.toml') }}