[Doppins] Upgrade dependency jest to ^24.8.0

[doppins-bot]

Hi!

A new version was just released of jest, so Doppins
has upgraded your project's dependency ranges.

Make sure that it doesn't break anything, and happy merging!

---

Upgraded jest from ^23.6.0 to ^24.6.0

[codecov]

Codecov Report

Merging #42 into dev will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff         @@
##            dev    #42   +/-   ##
===================================
  Coverage   100%   100%           
===================================
  Files         2      2           
  Lines        15     17    +2     
  Branches      4      4           
===================================
+ Hits         15     17    +2

Impacted Files	Coverage Δ
src/Modal.tsx	100% <0%> (ø)	⬆️
src/ModalPortal.tsx	100% <0%> (ø)	⬆️

---

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[doppins-bot]

An additional new version was just released of jest, so we've added an
extra commit upgrading your range to ^24.7.0.

Hope that's alright!
— Doppins

[doppins-bot]

An additional new version was just released of jest, so we've added an
extra commit upgrading your range to ^24.7.1.

Hope that's alright!
— Doppins

[doppins-bot]

An additional new version was just released of jest, so we've added an
extra commit upgrading your range to ^24.8.0.

Hope that's alright!
— Doppins