gha: 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>

.github/workflows/build.yml

@@ -78,7 +78,7 @@ jobs:
 
       # https://github.com/marketplace/actions/cache
       - name: Cache Go modules
-        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v2
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v2
         with:
           path: |
             ~/.cache/go-build

.github/workflows/release.yml

@@ -77,7 +77,7 @@ jobs:
 
       # https://github.com/marketplace/actions/cache
       - name: Cache Go modules
-        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v2
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v2
         with:
           path: |
             ~/.cache/go-build