message: Update version to 4.2.10-alpha.
diff: @@ -87,7 +87,7 @@ int daemon(int nochdir, int noclose);
  /*----------------------------------------------------------------------------*/
  -#define SWOOLE_VERSION "4.2.9"
  +#define SWOOLE_VERSION "4.2.10-alpha"
  #define SWOOLE_BUG_REPORT \
  "A bug occurred in Swoole-v" SWOOLE_VERSION ", please report it.\n"\
  "The Swoole developers probably don't know about it,\n"\
  