Bump actions/cache from v2 to v2.1.4

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>

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
       # if: steps.vendor-cache.outputs.cache-hit != 'true'
       - name: Restore vendor from cache
         id: vendor-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         env:
           cache-name: vendor
         with:

.github/workflows/release.yml

@@ -28,7 +28,7 @@ jobs:
       # if: steps.vendor-cache.outputs.cache-hit != 'true'
       - name: Restore vendor from cache
         id: vendor-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         env:
           cache-name: vendor
         with: