Update versions in pom.xml and documentation after 0.6.2 release

[github-actions]

• Versions are updated in pom.xml, README.md and in examples
• Current project version is incremented to the next snapshot

[codecov]

Codecov Report

Merging #922 (7a5f65e) into master (b57b71d) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #922   +/-   ##
=========================================
  Coverage     84.14%   84.14%           
  Complexity     2373     2373           
=========================================
  Files           101      101           
  Lines          6006     6006           
  Branches       1772     1772           
=========================================
  Hits           5054     5054           
  Misses          263      263           
  Partials        689      689           

Flag	Coverage Δ
unittests	84.14% <ø> (ø)

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