build: adjust test workflow

Author: jpoehnelt

.github/workflows/test.yml

@@ -13,13 +13,13 @@
 # limitations under the License.
 
 name: Test
-on: [pull_request]
+on: [pull_request, push]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
   test:
-    strategy:
-      matrix:
-        os: [macos-latest, ubuntu-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
@@ -31,7 +31,4 @@ jobs:
       - run: pnpm lint
       - run: pnpm check
       - run: xvfb-run -a pnpm test
-        if: runner.os == 'Linux'
-      - run: pnpm test
-        if: runner.os != 'Linux'
       - run: pnpm ci:package