[sonic-platform-common] Update submodule

Update submodule to include:
ce51894 2021-08-12 [Y-Cable] add the definition inside setup.py to include sonic_y_cable.credo as a package (sonic-net#211)
cd3cca7 2021-08-06 [Y-Cable][Credo] Credo implementation of YCable class which inherits from YCableBase required for Y-Cable API's in sonic-platform-daemons (sonic-net#203)
bd694b2 2021-08-03 Load interval from thermal_policy.json (sonic-net#178)
c43dc17 2021-07-28 [sonic_y_cable] add abstract class YCableBase required for Y-cable API support for multiple vendors (sonic-net#186)
e168f1d 2021-07-19 [python coverage] fix result color bar (sonic-net#202)
87c81de 2021-07-13 Fix Xcvrd crash due to invalid key access in type_of_media_interface, host_electrical_interface, connector_dict (sonic-net#206)
4533f82 2021-06-21 Add a template function that returns list of asics on module (sonic-net#185)
1e860c5 2021-06-18 Fix decode error when parsing EEPROM fields (sonic-net#199)
93641f3 2021-06-17 Unifying the platform api for get_pcie_aer_stats with PcieBase (sonic-net#197)