Bump to go 1.21

[nothing0012]

bump to go 1.21

Description

Motivation and Context

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #544 (0ff0897) into main (37eba13) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main     #544   +/-   ##
=======================================
  Coverage   80.93%   80.93%           
=======================================
  Files          28       28           
  Lines        2240     2240           
=======================================
  Hits         1813     1813           
  Misses        337      337           
  Partials       90       90           

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