[UR] Skip SYCL e2e testing for UR-only changes

A number of changes to UR won't have any observable effects on SYCL
builds, so no point in running a full SYCL build and e2e test for them.

Author: RossBrunton

.github/workflows/sycl-linux-precommit.yml

@@ -24,6 +24,11 @@ on:
     - '.github/workflows/sycl-rel-nightly.yml'
     - 'devops/containers/**'
     - 'devops/actions/build_container/**'
+    - 'unified-runtime/examples/**'
+    - 'unified-runtime/scripts/**'
+    - 'unified-runtime/test/**'
+    - 'unified-runtime/third_party/**'
+    - 'unified-runtime/tools/**'
 
 concurrency:
   #  Cancel a currently running workflow from the same PR, branch or tag.

.github/workflows/sycl-windows-precommit.yml

@@ -23,6 +23,11 @@ on:
     - '.github/workflows/sycl-rel-nightly.yml'
     - 'devops/containers/**'
     - 'devops/actions/build_container/**'
+    - 'unified-runtime/examples/**'
+    - 'unified-runtime/scripts/**'
+    - 'unified-runtime/test/**'
+    - 'unified-runtime/third_party/**'
+    - 'unified-runtime/tools/**'
 
 permissions: read-all