[ci] utest add --strict

.github/workflows/action_utest.yml

@@ -105,7 +105,7 @@ jobs:
         echo CONFIG_RT_USING_UTESTCASES=y >> $TEST_BSP_ROOT/.config
         cat examples/utest/configs/$TEST_CONFIG_FILE >> $TEST_BSP_ROOT/.config
         scons --pyconfig-silent -C $TEST_BSP_ROOT
-        scons -j$(nproc) -C $TEST_BSP_ROOT
+        scons -j$(nproc) --strict -C $TEST_BSP_ROOT
 
     - name: Start Test
       if: ${{ success() }}