Bump actions/cache from v2 to v2.1.4 (#14)

Bumps [actions/cache](https://github.com/actions/cache) from v2 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2...26968a0)

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

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

.github/workflows/go.yml

@@ -12,7 +12,7 @@ jobs:
       id: read_versions
       run: |
         echo "::set-output name=go::$(go mod edit -json | jq -r .Go)"
-    - uses: actions/cache@v2
+    - uses: actions/cache@v2.1.4
       with:
         path: |
           ~/go/pkg/mod

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       id: read_versions
       run: |
         echo "::set-output name=go::$(go mod edit -json | jq -r .Go)"
-    - uses: actions/cache@v2
+    - uses: actions/cache@v2.1.4
       with:
         path: |
           ~/go/pkg/mod