upgrade starlette dependency to 0.13.4

[rushton]

This upgrade is mostly to address the issue with StreamingResponse not killing the request when the client unexpectedly disconnects from the stream.

[codecov]

Codecov Report

Merging #1361 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #1361   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          226       226           
  Lines         6785      6785           
=========================================
  Hits          6785      6785           

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[mumumumu]

This is also needed to support the SameSite flag when setting cookies (mentioned in #1099 and #480).

[victoraugustolls]

@tiangolo is this ok? Really looking forward to use newest starlette version for the fixes.

[ziglef]

If this is ok, I'm also looking forward to use the newest starlette version (mostly for samesite cookies)

[euri10]

If this is ok, I'm also looking forward to use the newest starlette version (mostly for samesite cookies)

same !

[tiangolo]

Great! Thank you @rushton ! 🚀

This will be available in FastAPI version 0.57.0, (to be released in a couple of hours).