[sonic-platform-common] update submodule

a659219 [SONIC_SFP] adding abstract methods for reading and writing the eeprom address space within platform api (sonic-net#126)
848f4a6 Add third-party licenses (sonic-net#138)
c2ecd9a Add license file (sonic-net#137)
403747a [sonic-platform-common] Add new platform API for SONiC Physical MIB Extension feature (sonic-net#134)
19b8545 [sonic_y_cable] fix the unpacking (sonic-net#135)

Signed-off-by: vaibhav-dahiya <vdahiya@microsoft.com>