Update Changelog after 1.5.5 release

[rohitgr7]

What does this PR do?

Fixes #<issue_number>

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Part of #1

cc @Borda

[github-actions]

Build Error! No Linked Issue found. Please link an issue or mention it in the body using #<issue_id>

[codecov]

Codecov Report

Merging #10977 (2bbc926) into master (99adc45) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10977   +/-   ##
=======================================
  Coverage      92%      92%           
=======================================
  Files         177      177           
  Lines       16520    16520           
=======================================
  Hits        15164    15164           
  Misses       1356     1356