Bump actions/cache from 2.1.5 to 2.1.7

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.5 to 2.1.7.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.5...v2.1.7)

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

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

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
         node-version: ${{ matrix.node-version }}
 
     - name: Load cached dependencies
-      uses: actions/cache@v2.1.5
+      uses: actions/cache@v2.1.7
       id: cache
       with:
         path: |
@@ -144,7 +144,7 @@ jobs:
         node-version: ${{ matrix.node-version }}
 
     - name: Load cached dependencies
-      uses: actions/cache@v2.1.5
+      uses: actions/cache@v2.1.7
       id: cache
       with:
         path: |