Update prop-types to the latest version 🚀

[greenkeeper]

The dependency prop-types was updated from 15.6.2 to 15.7.0.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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[codecov]

Codecov Report

Merging #1951 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1951   +/-   ##
=======================================
  Coverage   92.12%   92.12%           
=======================================
  Files         188      188           
  Lines       10807    10807           
  Branches     1581     1581           
=======================================
  Hits         9956     9956           
  Misses        851      851

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[greenkeeper]

• The dependency prop-types was updated from 15.6.2 to 15.7.1.

Update to this version instead 🚀

[greenkeeper]

• The dependency prop-types was updated from 15.6.2 to 15.7.2.

Update to this version instead 🚀