[chore] update Go to 1.21, and update relevant pkgs

[saurabh100ni]

Desired Behaviour

Need to update Go to 1.21 in go.mod and in Dockerfile, and also Makefile

• Minor chore on updating meshkit and meshery-adapter-library

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[captain-Akshay]

@saurabh100ni i would like to work on this!

[hemantmm]

Hi, @saurabh100ni can I start working on this issue?

[saurabh100ni]

@hemantmm let's assign this to @captain-Akshay as he came first, There are other issues we would appreciate your contributions to.

[hemantmm]

Hi, @saurabh100ni can I take up this issue?

[saurabh100ni]

Hey @hemantmm @captain-Akshay is already working on this one. But that won't stop you from contributing. Here's the link for more issues : here

[hemantmm]

ok