[202012] [submodule] Update sonic-utilites pointer (#9410)

Contains the following commits
239cb5c  [flex counter] Flex counter threads consume too much CPU resources (Azure/sonic-utilities#1925)
8a3b41a [load_minigraph] Delay pfcwd start until the buffer templates are rendered  (Azure/sonic-utilities#1937)
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Neetha John 2021-12-06 13:44:00 -08:00 committed by GitHub
parent 2019ccaa2a
commit 8f15d39bae
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@ -1 +1 @@
Subproject commit ec9e5ee3755068a62b48b6242776b754197a8660
Subproject commit 8a3b41a9f7669fe0c6552c4fc942e2fa5ca1f891