chore(deps): bump actions/cache from 4.2.0 to 4.2.1 (#547)

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@1bd1e32...0c907a7)

---
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/validations.yaml

@@ -63,7 +63,7 @@ jobs:
       # why not use actions/upload-artifact? It is very slow (3 minutes to upload ~600MB of data, vs 10 seconds with this approach).
       # see https://github.com/actions/upload-artifact/issues/199 for more info
       - name: Upload snapshot artifacts
-        uses: actions/cache/save@1bd1e32a3bdc45362d1e726936510720a7c30a57 #v4.2.0
+        uses: actions/cache/save@0c907a75c2c80ebcb7f088228285e798b750cf8f #v4.2.1
         with:
           path: snapshot
           key: snapshot-build-${{ github.run_id }}
@@ -77,14 +77,14 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 #v4.2.2
 
       - name: Download snapshot build
-        uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57 #v4.2.0
+        uses: actions/cache/restore@0c907a75c2c80ebcb7f088228285e798b750cf8f #v4.2.1
         with:
           path: snapshot
           key: snapshot-build-${{ github.run_id }}
 
       - name: Restore install.sh test image cache
         id: install-test-image-cache
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 #v4.2.0
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f #v4.2.1
         with:
           path: ${{ github.workspace }}/test/install/cache
           key: ${{ runner.os }}-install-test-image-cache-${{ hashFiles('test/install/cache.fingerprint') }}
@@ -120,7 +120,7 @@ jobs:
         uses: ./.github/actions/bootstrap
 
       - name: Download snapshot build
-        uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57 #v4.2.0
+        uses: actions/cache/restore@0c907a75c2c80ebcb7f088228285e798b750cf8f #v4.2.1
         with:
           path: snapshot
           key: snapshot-build-${{ github.run_id }}