fix startlette deprecation warning

[DeoLeung]

Description

fix deprecation warning

[sentrivana]

TY @DeoLeung!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.94%. Comparing base (104db8c) to head (f95e3ef).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5034      +/-   ##
==========================================
- Coverage   83.94%   83.94%   -0.01%     
==========================================
  Files         178      178              
  Lines       17834    17834              
  Branches     3170     3170              
==========================================
- Hits        14971    14970       -1     
- Misses       1901     1902       +1     
  Partials      962      962              

Files with missing lines	Coverage Δ
sentry_sdk/integrations/starlette.py	85.02% <100.00%> (ø)

... and 3 files with indirect coverage changes