🌱 Bump actions/cache from 3.0.5 to 3.0.6

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.5 to 3.0.6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@0865c47...f427802)

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

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

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 #v2.4.0
         # https://github.com/mvdan/github-actions-golang#how-do-i-set-up-caching-between-builds
-      - uses: actions/cache@0865c47f36e68161719c5b124609996bb5c40129 #v2.1.7
+      - uses: actions/cache@f4278025ab0f432ce369118909e46deec636f50c #v2.1.7
         with:
           # In order:
           # * Module download cache
@@ -55,7 +55,7 @@ jobs:
     steps:
       - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 #v2.4.0
         # https://github.com/mvdan/github-actions-golang#how-do-i-set-up-caching-between-builds
-      - uses: actions/cache@0865c47f36e68161719c5b124609996bb5c40129 #v2.1.7
+      - uses: actions/cache@f4278025ab0f432ce369118909e46deec636f50c #v2.1.7
         with:
           # In order:
           # * Module download cache