docs: Update the changelogs for versions 3.4,3.5 and 3.6

[ronaldngounou]

This reflects the use of Go 1.24.10 for compiling binaries.

Contributes to #20891

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.19%. Comparing base (5954bf7) to head (e066aa1).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

see 21 files with indirect coverage changes

@@           Coverage Diff           @@
##             main   #20904   +/-   ##
=======================================
  Coverage   69.19%   69.19%           
=======================================
  Files         422      422           
  Lines       34833    34839    +6     
=======================================
+ Hits        24102    24107    +5     
- Misses       9334     9335    +1     
  Partials     1397     1397           

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[ivanvc]

Thanks for the pull request, @ronaldngounou. We're missing 3.4's entry. Could you please add it? Thanks.

[ronaldngounou]

I added an entry for 3.4.

[ronaldngounou]

/test pull-etcd-coverage-report

[hwdef]

LGTM
Thanks

[k8s-ci-robot]

@ronaldngounou: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-etcd-coverage-report	e066aa1	link	true	/test pull-etcd-coverage-report

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[ivanvc]

LGTM. Thanks, @ronaldngounou.

[k8s-ci-robot]

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