chore(deps): bump actions/cache from 2.1.4 to 2.1.5

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.4...v2.1.5)

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

.github/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/cache@v2.1.4
+      - uses: actions/cache@v2.1.5
         with:
           path: /tmp/.buildx-cache
           key: buildx-${{ github.sha }}