Add test step to PR workflows

Co-authored-by: lengau <4305943+lengau@users.noreply.github.com>

Author: Copilot

.github/workflows/pull-request-armhf.yaml

@@ -10,9 +10,13 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  build-arm:
-    name: 🧪 Build snap on arm64
+  build-and-test:
+    name: 🧪 Build and test snap on arm64
     runs-on: ubuntu-24.04-arm
     steps:
       - name: 🧪 Build snap on arm64
         uses: snapcrafters/ci/test-snap-build@main
+      - name: 🗒️ Run tests
+        uses: snapcrafters/ci/run-tests@main
+        with:
+          test-script: ./test.sh

.github/workflows/pull-request.yaml

@@ -18,3 +18,7 @@ jobs:
     steps:
       - name: 🧪 Build snap
         uses: snapcrafters/ci/test-snap-build@main
+      - name: 🗒️ Run tests
+        uses: snapcrafters/ci/run-tests@main
+        with:
+          test-script: ./test.sh