chore(deps): bump actions/cache from 2.1.7 to 3 (#50)

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.7 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.7...v3)

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

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

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

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           go-version: 1.16
       - name: cache
-        uses: actions/cache@v2.1.7
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cache/go-build

.github/workflows/codecov.yml

@@ -16,7 +16,7 @@ jobs:
         with:
           go-version: 1.16
       - name: cache
-        uses: actions/cache@v2.1.7
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cache/go-build