devops: add bots for other browsers/platforms (#174)

.github/workflows/ci.yml

@@ -8,7 +8,11 @@ on:
 
 jobs:
   build-and-test:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v4
@@ -25,6 +29,10 @@ jobs:
     - name: Playwright install
       run: npx playwright install --with-deps
 
+    - name: Install MS Edge
+      if: ${{ matrix.os == 'macos-latest' }} # MS Edge is not preinstalled on macOS runners.
+      run: npx playwright install msedge
+
     - name: Run linting
       run: npm run lint