[Backport 1.3] Add release notes for 1.3.6

[sejli]

Add release notes for 1.3.6

(cherry picked from commit fd8f9de)

Description

Add release notes for 1.3.6 #474

Issues Resolved

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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[codecov-commenter]

Codecov Report

Merging #475 (746d34e) into 1.3 (1dfa5aa) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                1.3     #475   +/-   ##
=========================================
  Coverage     74.35%   74.35%           
  Complexity      383      383           
=========================================
  Files            94       94           
  Lines          3969     3969           
  Branches        612      612           
=========================================
  Hits           2951     2951           
  Misses          884      884           
  Partials        134      134           

Flag	Coverage Δ
dashboards-reports	77.06% <ø> (ø)
reports-scheduler	71.83% <ø> (ø)

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