Bump actions/cache from 2.1.5 to 2.1.6

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.5 to 2.1.6.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.5...v2.1.6)

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

Author: dependabot[bot]

.github/workflows/nodejs.yaml

@@ -51,7 +51,7 @@ jobs:
         with:
           node-version: ${{ matrix.vars.node }}
       - name: Cache PNPM store
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: ~/.pnpm-store/v3
           key: pnpm5-${{ matrix.vars.id }}-${{ hashFiles('**/pnpm-lock.yaml') }}