Bump actions/cache from 2 to 3

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/lint.yml

@@ -41,7 +41,7 @@ jobs:
         run: |
           echo "::set-output name=dir::$(pip cache dir)"
       - name: Restore PIP cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: pip-${{ steps.python.outputs.python-version }}-${{ hashFiles('requirements.txt', 'requirements_test.txt') }}