Update dependency @sentry/browser to ^5.4.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@sentry/browser	dependencies	minor	^5.3.0 -> ^5.4.0

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Release Notes

getsentry/sentry-javascript

v5.4.0

Compare Source

• [global] feat: Exposed new simplified scope API. Sentry.setTag, Sentry.setTags, Sentry.setExtra, Sentry.setExtras, Sentry.setUser, Sentry.setContext

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[codecov]

Codecov Report

Merging #561 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #561      +/-   ##
=========================================
- Coverage   87.72%   87.7%   -0.03%     
=========================================
  Files          25      25              
  Lines        3496    3496              
=========================================
- Hits         3067    3066       -1     
- Misses        429     430       +1

Impacted Files	Coverage Δ
t4/api.py	87.08% <0%> (-0.42%)	⬇️

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