Update dependency jest to v25

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
jest (source)	devDependencies	major	24.9.0 -> 25.1.0

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Release Notes

facebook/jest

v25.1.0

Compare Source

v25.0.0

Compare Source

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[codecov]

Codecov Report

Merging #149 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #149   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          45     45           
  Lines         418    418           
=====================================
  Hits          418    418

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