Bump actions/cache from 3.0.4 to 3.0.6 (#265)

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.4 to 3.0.6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v3.0.4...v3.0.6)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

.github/workflows/ci.yaml

@@ -15,7 +15,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - uses: "actions/checkout@v3"
-      - uses: "actions/cache@v3.0.4"
+      - uses: "actions/cache@v3.0.6"
         with:
           path: "~/go/pkg/mod"
           key: "${{ runner.os }}-gomod-${{ hashFiles('**/go.sum') }}"