[submodule] Update submodule linkmgrd to the latest HEAD automatically (#17820)

#### Why I did it
src/linkmgrd
```
* 74c33ea - (HEAD -> master, origin/master, origin/HEAD) [active-standby] Probe the link in suspend timeout (#235) (12 hours ago) [Longxiang Lyu]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2024-01-18 16:34:04 +08:00 committed by GitHub
parent ee72c068b2
commit fc2c319c3d
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@ -1 +1 @@
Subproject commit 6586abfa832f4995804ea0227b06f332bd5d354e
Subproject commit 74c33eacf4325b6e0f3e3b11fc6c50b4222921a1