fix(version_depend): add a fake version on dev

make dev useable on all megskull version

GitOrigin-RevId: 8c4739d470

src/core/include/megbrain/version.h

@@ -12,8 +12,8 @@
 #pragma once
 
 #define MGB_MAJOR   8
-#define MGB_MINOR   4
-#define MGB_PATCH   1
+#define MGB_MINOR   9999
+#define MGB_PATCH   0
 //! whether it is development version
 #ifndef MGB_IS_DEV
 #define MGB_IS_DEV  0