[202012][swss-common/utilities/platform-daemons] Update submodule (#7563

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* [202012][swss/swss-common/utilities/platform-daemons] Update submodule

sonic-swss
- [flex-counters] Delay flex counters stats init for faster boot time [202012] (#1736)

sonic-swss-common
- [swig] allow threads (#477)

sonic-utilities
- [sfpshow] Gracefully handle improper 'specification_compliance' field (#1594)

sonic-platform-daemons
- [xcvrd] Change the y_cable presence logic to use "mux_cable" table as identifier from Config DB (#176)
- [xcvrd] Enhance Media Settings (#177)

Signed-off-by: Danny Allen <daall@microsoft.com>