windows: ignore compilation warnings

    D:\a\_temp\msys64\clang64\include\stdio.h:171:18: error:
         warning: '__format__' attribute argument not supported: gnu_scanf [-Wignored-attributes]
          __attribute__((__format__ (gnu_scanf, 2, 0))) __MINGW_ATTRIB_NONNULL(2)
                         ^
        |
    171 |   __attribute__((__format__ (gnu_scanf, 2, 0))) __MINGW_ATTRIB_NONNULL(2)
        |                  ^

hevm.cabal

@@ -58,6 +58,7 @@ common shared
     -Wno-unticked-promoted-constructors
     -Wno-orphans
     -Wno-ambiguous-fields
+    -optc-Wno-ignored-attributes
   default-language: GHC2021
   default-extensions:
     DuplicateRecordFields