Bump actions/cache from 4.1.2 to 4.2.0

Bumps [actions/cache](https://github.com/actions/cache) from 4.1.2 to 4.2.0.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@6849a64...1bd1e32)

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

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -48,7 +48,7 @@ jobs:
 
       - name: Cache tox environments
         id: cache-tox
-        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a  # v4.1.2
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57  # v4.2.0
         with:
           path: .tox
           key: tox-typing-${{ hashFiles('setup.cfg') }}-${{ hashFiles('pyproject.toml') }}-${{ hashFiles('tox.ini') }}
@@ -80,7 +80,7 @@ jobs:
 
       - name: Cache tox environments
         id: cache-tox
-        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a  # v4.1.2
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57  # v4.2.0
         with:
           path: .tox
           key: tox-${{ matrix.python-version }}-${{ hashFiles('setup.cfg') }}-${{ hashFiles('pyproject.toml') }}-${{ hashFiles('tox.ini') }}