Bump assertj-core from 3.12.2 to 3.13.1

[dependabot-preview]

Bumps assertj-core from 3.12.2 to 3.13.1.

Commits

• 1e16a11 [maven-release-plugin] prepare release assertj-core-3.13.1
• 6a61bfc Make dependency on OpenTest4J optional again (fixes #1563).
• f58a64e AssertionErrorCreator: Fix TODO
• 934438f [maven-release-plugin] prepare for next development iteration
• 678a714 [maven-release-plugin] prepare release assertj-core-3.13.0
• f21866b use latest parent pom
• 0cffb66 Update byte-buddy to version 1.9.16.
• 811be90 Clarify javadoc ConfigurationProvider
• 4c63e19 Display the registered Configuration
• 5475807 Remove system.out prints
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #265 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #265   +/-   ##
=========================================
  Coverage     83.46%   83.46%           
  Complexity       79       79           
=========================================
  Files            16       16           
  Lines           514      514           
  Branches         72       72           
=========================================
  Hits            429      429           
  Misses           39       39           
  Partials         46       46

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