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

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
         python-version: [3.9]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         id: cache-pip
         with:
           path: |
@@ -24,14 +24,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pip-
             ${{ runner.os }}-
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         id: cache-shellcheck
         with:
           path: bin/shellcheck
           key: ${{ runner.os }}-shellcheck
           restore-keys: |
             ${{ runner.os }}-shellcheck
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ~/.cache/pre-commit
           key: pre-commit|${{ env.PY }}|${{ hashFiles('.pre-commit-config.yaml') }}