[swss] Update submodule (#9816)

Update the sonic-swss submodule. The following are new commits in the submodule:

6cb43ee [p4orch] Fix handlePortStatusChangeNotification status deserialize (#2111)
863f0f1 [azp]: Enable PR diff coverage (#2083)
bf4cd4a Fix the unsafe usage of strncpy in portsorch.cpp (#2110)
c1b4b40 support port isolation group in BFN platform (#1940)


Signed-off-by: Andriy Kokhan <andriyx.kokhan@intel.com>