Bump actions/cache from 3.0.1 to 3.0.2 (#3019)

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.1 to 3.0.2.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3.0.1...v3.0.2)

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

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

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

Author: dependabot[bot]

.github/workflows/test.yaml

@@ -43,7 +43,7 @@ jobs:
         run: echo "::set-output name=today::$(date +'%Y-%m-%d')"
         shell: bash
       - name: Cache clean flutter
-        uses: actions/[email protected].1
+        uses: actions/[email protected].2
         if: matrix.job == 'flutter'
         env:
           # Increment version to invalidate bad/obsolete caches.
@@ -52,7 +52,7 @@ jobs:
           path: ~/.dartdoc_grinder
           key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ steps.date.outputs.today }}
       - name: Cache .pub-cache
-        uses: actions/[email protected].1
+        uses: actions/[email protected].2
         if: matrix.job == 'flutter'
         env:
           # Increment version to invalidate bad/obsolete caches.