build(test.yml): set node-version to 16

Author: gr2m

.github/workflows/test.yml

@@ -1,16 +1,13 @@
 name: Test
-
-on:
+"on":
   push:
     branches:
       - master
       - renovate/**
-
   pull_request:
     types:
       - opened
       - synchronize
-
 jobs:
   test_matrix:
     strategy:
@@ -19,9 +16,7 @@ jobs:
           - 10
           - 12
           - 14
-
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
@@ -30,15 +25,14 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - uses: bahmutov/npm-install@v1
       - run: npm run test
-
-  # separate job to set as required in branch protection,
-  # as the build names above change each time Node versions change
   test:
     runs-on: ubuntu-latest
     needs: test_matrix
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
+        with:
+          node-version: 16
       - uses: bahmutov/npm-install@v1
       - run: find ./scripts -type f -exec "shellcheck" "-x" {} \;
       - run: docker build -t semanticrelease/npm-registry-docker .