[sonic-linkmgrd][master] submodule update (#9420)

#### What I did 

[sonic-linkmgrd][master] submodule update

6c6151b Fix unstable unit tests (state change handler wasn't invoked) (#8)
2f7dc0a support code diff coverage (#5)
83f0002 Force mux state switch to standby if triggered from Cli (#6)

signed-off-by: Jing Zhang zhangjing@microsoft.com
This commit is contained in:
Jing Zhang 2021-12-08 08:54:00 -08:00 committed by GitHub
parent 2d097ded8a
commit a263edbc98
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@ -1 +1 @@
Subproject commit c11a5763a070a68af048ccd9ca473294f93fb256
Subproject commit 6c6151ba9512166de0430e8e95076809dd706496