[202305][Mellanox]Update SDK/FW to 4.6.2166/2012.2166

[dgsudharsan]

Why I did it

Update SDK/FW version to 4.6.2166/2012.2166
Fixed issues

• On Spectrum-3 systems, ports' toggling while sending traffic on 400G speed ports, might result in stuck FW.
• In Spectrum-1 switch systems, 50G SR2 speed mode is not supported when AutoNeg is enabled. In this case although the max interface speed is 50G for SR2 or SR4 or SR, the actual max interface speed negotiated between the loopback is 25G.
• On Spectrum-2 and Spectrum-3, Switch create in fastboot might take more than 40 seconds in case there are no active links.

Work item tracking

• Microsoft ADO (number only):

How I did it

Updating makefiles

How to verify it

Running regression

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

• 202305 commit 5d30151

Description for the changelog

Link to config_db schema for YANG module changes

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