Update 3.4 changelog to cover the goroutine leakage issue

[ahrtr]

Previous PR forgot to update 3.4 changelog.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.86%. Comparing base (3de0018) to head (277afc7).

❗ Current head 277afc7 differs from pull request most recent head 3bacd02

Please upload reports for the commit 3bacd02 to get more accurate results.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

see 24 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18824      +/-   ##
==========================================
+ Coverage   68.76%   68.86%   +0.10%     
==========================================
  Files         420      420              
  Lines       35523    35523              
==========================================
+ Hits        24426    24464      +38     
+ Misses       9665     9638      -27     
+ Partials     1432     1421      -11     

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3de0018...3bacd02. Read the comment docs.

[ahrtr]

/test pull-etcd-robustness-amd64

[ivanvc]

LGTM. Thanks, Benjamin.

[jmhbnz]

LGTM - Thanks @ahrtr

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, ivanvc, jmhbnz

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [ahrtr,jmhbnz]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment