libgimp: List gio_specific as dependency for .typelib

This is required starting with Glib 2.86.0.

libgimp/meson.build

@@ -495,6 +495,11 @@ else
     'GObject-2.0',
     'Pango-1.0',
   ]
+  if not platform_windows
+    libgimp_gir_includes += [ 'GioUnix-2.0' ]
+  else
+    libgimp_gir_includes += [ 'GioWin32-2.0' ]
+  endif
 
   gir_args = [
     '-DGIMP_COMPILATION',