ci(codespell): skip STM32Cube_FW directory

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

.github/workflows/codespell.yml

@@ -24,4 +24,5 @@ jobs:
           check_hidden: true
           # In the event of a false positive, add the word in all lower case to this file:
           # ignore_words_file: ./extras/codespell-ignore-words-list.txt
-          path: src       
+          exclude_file: src/utility/STM32Cube_FW/
+          path: src