chore(deps): bump actions/setup-node from v1 to v2.1.5 (#595)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from v1 to v2.1.5.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v1...46071b5)

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

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

Author: dependabot[bot]

.github/workflows/validate.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: ⎔ Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2.1.5
         with:
           node-version: ${{ matrix.node }}
 
@@ -63,7 +63,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: ⎔ Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2.1.5
         with:
           node-version: 14