Update dependency org.apache.maven.plugins:maven-jxr-plugin to v3.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugins:maven-jxr-plugin	3.0.0 -> 3.4.0

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (261fa4b) to head (d1258eb).
Report is 2 commits behind head on master.

❗ Current head d1258eb differs from pull request most recent head 20e1e03

Please upload reports for the commit 20e1e03 to get more accurate results.

Additional details and impacted files

@@             Coverage Diff             @@
##              master      #101   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       700       700           
===========================================
  Files             61        61           
  Lines           1213      1213           
  Branches           2         2           
===========================================
  Hits            1213      1213           

Flag	Coverage Δ
unitlinuxopenjdk10	100.00% <ø> (ø)
unitlinuxopenjdk11	100.00% <ø> (ø)
unitlinuxopenjdk12	100.00% <ø> (ø)

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