fix(ci): make test job dependent on the build job

Signed-off-by: Morten B. Rasmussen <m.rasmussen@samsung.com>

.github/workflows/tests.yml

@@ -2,14 +2,10 @@
 name: Tests
 
 on:
-  push:
-    branches:
-    - '*'
-    tags:
-    - '*'
-  pull_request:
-    types: [opened, reopened, synchronize]
-    branches: [main]
+  workflow_run:
+    workflows: ["Build"]
+    types:
+      - completed
 
 defaults:
   run: