Just disable timing-related assertions in CI

That way there's no risk of periodic non-deterministic test failures.

.github/workflows/test-execution.yml

@@ -24,7 +24,7 @@ jobs:
         python -m pip install --upgrade pip
         pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
         pip install -r requirements.txt
-        pip install -r tests-unit/requirements.txt
-    - name: Run Execution Tests
+        pip install websocket-client
+    - name: Run Execution Tests (with timing checks disabled)
       run: |
-        python -m pytest tests/execution -v
+        python -m pytest tests/execution -v --skip-timing-checks