Add 1.6.2 hotfix changes to version and CHANGELOG.

[n2ygk]

Description of the Change

Merge 1.6.2 hotfix changes into master.

Checklist

• PR only contains one change (considered splitting up PR)
• unit-test added
• documentation updated
• CHANGELOG.md updated (only for user relevant changes)
• author name in AUTHORS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.67%. Comparing base (58f4f5f) to head (3b91313).
Report is 208 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1073   +/-   ##
=======================================
  Coverage   96.67%   96.67%           
=======================================
  Files          31       31           
  Lines        1777     1777           
=======================================
  Hits         1718     1718           
  Misses         59       59           

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