Bump actions/cache from 4.0.1 to 4.2.1

Bumps [actions/cache](https://github.com/actions/cache) from 4.0.1 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@ab5e6d0...0c907a7)

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

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

Author: dependabot[bot]

.github/workflows/content-artifacts.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Install xmllint
         run: sudo apt-get install -y libxml2-utils          
       - name: Cache generated content for OSCAL build artifacts
-        uses: actions/cache@ab5e6d0c87105b4c9c2047343972218f562e4319
+        uses: actions/cache@0c907a75c2c80ebcb7f088228285e798b750cf8f
         with:
           path: |
             build/oscal/build/node_modules