[201911][sonic-platform-common]: Advance submodule

[nazariig]

Signed-off-by: Nazarii Hnydyn [email protected]

- Why I did it

• Advanced sonic-platform-common

- How I did it

• N/A

- How to verify it

1. make configure PLATFORM=mellanox
2. make target/sonic-mellanox.bin

- Description for the changelog

Commits on May 23, 2020
[201911][component]: Introduce new firmware management API (#87)
ee60f54 

- A picture of a cute animal (not mandatory but encouraged)

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