cpp standard?

Signed-off-by: faradaym <[email protected]>

Author: faradaym

.github/workflows/arduino_ci.yml

@@ -42,7 +42,7 @@ jobs:
     - name: Run cppcheck
       run: |
         cppcheck --version
-        cppcheck --error-exitcode=1 --std=c++20 --force src
+        cppcheck --error-exitcode=1 --std=c++2a --force src
 
     - name: Arduino setup
       run: |