Take care of the strict-prototypes warning in main as well

/Users/runner/work/ThunderClientLibraries/ThunderClientLibraries/ThunderClientLibraries/Source/deviceinfo/device_info/main.c:58:14: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
void ShowMenu()
             ^
              void
/Users/runner/work/ThunderClientLibraries/ThunderClientLibraries/ThunderClientLibraries/Source/deviceinfo/device_info/main.c:83:9: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
int main()
        ^
         void

Source/deviceinfo/device_info/main.c

@@ -55,7 +55,7 @@ static void toHexString(
         fflush(stdout);                                 \
     } while (0)
 
-void ShowMenu()
+void ShowMenu(void)
 {
     printf("Enter\n"
            "\tI : Get ID as a string.\n"
@@ -80,7 +80,7 @@ void ShowMenu()
            );
 }
 
-int main()
+int main(void)
 {
     int16_t result = 0;