build(deps): bump actions/cache from 2.1.4 to 2.1.5 (#5388)

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](https://github.com/actions/cache/compare/v2.1.4...v2.1.5)

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

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

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/setup-node@v2.1.5
         with:
           node-version: 14
-      - uses: actions/cache@v2.1.4
+      - uses: actions/cache@v2.1.5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -42,7 +42,7 @@ jobs:
         uses: actions/setup-node@v2.1.5
         with:
           node-version: 14
-      - uses: actions/cache@v2.1.4
+      - uses: actions/cache@v2.1.5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}