Update Golang version from v1.20.4 to v1.20.6

[RainbowMango]

Task description:

We are going to update the default Go version for CI and release bots to v1.20.6.

Solution:

Please refer to similar PR #3565.

Who can join or take the task:

The good first issue is intended for first-time contributors to get started on his/her contributor journey.

After a contributor has successfully completed 1-2 good first issue's,
they should be ready to move on to help wanted items, saving the remaining good first issue for other new contributors.

How to join or take the task:

Just reply on the issue with the message /assign in a separate line.

Then, the issue will be assigned to you.

How to ask for help:

If you need help or have questions, please feel free to ask on this issue.
The issue author or other members of the community will guide you through the contribution process.

[parthn2]

/assign