Updating to new favicon

[design1online]

Issue: #2104 - Update React app favicon

What I did

Updated .ico files to a new version of the Storybook logo

[codecov]

Codecov Report

Merging #2113 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2113   +/-   ##
=======================================
  Coverage   21.41%   21.41%           
=======================================
  Files         263      263           
  Lines        5796     5796           
  Branches      696      701    +5     
=======================================
  Hits         1241     1241           
+ Misses       4016     4010    -6     
- Partials      539      545    +6

Impacted Files	Coverage Δ
app/react/src/client/preview/element_check.js	41.17% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/left_panel.js	25.71% <0%> (ø)	⬆️
addons/knobs/src/components/PropField.js	10.63% <0%> (ø)	⬆️
lib/ui/src/modules/ui/libs/filters.js	47.36% <0%> (ø)	⬆️
lib/ui/src/modules/ui/components/layout/usplit.js	38.7% <0%> (ø)	⬆️
lib/ui/src/libs/key_events.js	23.25% <0%> (ø)	⬆️
addons/storyshots/src/storybook-channel-mock.js	0% <0%> (ø)	⬆️
addons/info/src/components/Node.js	39.7% <0%> (ø)	⬆️
addons/knobs/src/components/types/Boolean.js	11.62% <0%> (ø)	⬆️
addons/info/src/components/Props.js	36.36% <0%> (ø)	⬆️
... and 16 more

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[ndelangen]

Thank you @design1online !

[Hypnosphi]

Looks like it became really small when comparing to the previous one. Can we remove the margins?

[ndelangen]

Yes, if we can reduce the margins that'd be great!