[202012][sonic-utilites] advance submodule (#13734)

```
39cdb49c7 [202012][show] Add bgpraw to show run all (#2639)
b3ebba2ca [202012][show] add new CLI to show tunnel route objects #2255 (#2659)
d08f59b9f Fixed a bug in "show vnet routes all" causing screen overrun. (#2644) (#2654)
a996abdb5 [202012][show] show logging CLI support for logs stored in tmpfs (#2652)
c60f771c0 [202012][show_bfd] add local discriminator in show bfd command (#2616)
```

Author: wen587