ci: run jest coverage workflow only on master (#5325)

.github/workflows/coverage.yml

@@ -0,0 +1,38 @@
+name: Coverage
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Coverage (${{ matrix.node-name }})
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: ['16']
+        include:
+          - node-version: '16'
+            node-name: 'Latest'
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Add dev branch
+        run: git branch dev origin/dev
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: latest
+      - name: Setup node
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'pnpm'
+      - name: Install dependencies
+        run: pnpm i --frozen-lockfile
+      - uses: ArtiomTr/jest-coverage-report-action@v2.0-rc.6
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          skip-step: install