chore(deps): bump actions/cache from 2.1.6 to 2.1.7

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.6 to 2.1.7.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.6...v2.1.7)

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

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

.github/workflows/push.yml

@@ -107,7 +107,7 @@ jobs:
         with:
           submodules: true
 
-      - uses: actions/[email protected].6
+      - uses: actions/[email protected].7
         with:
           path: ~/.npm
           key: ${{ matrix.os }}-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
@@ -187,7 +187,7 @@ jobs:
         with:
           submodules: true
 
-      - uses: actions/[email protected].6
+      - uses: actions/[email protected].7
         with:
           path: /tmp/.buildx-cache
           key: buildx-${{ github.sha }}