Update starlette version and add comprehension in encoders.py

[acutaia]

Updated starlette from 0.13.6 to 0.13.7
Cause version 0.13.7 fixes high memory usage when using BaseHTTPMiddleware middleware classes and streaming responses

[codecov]

Codecov Report

Merging #1875 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #1875   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          239       239           
  Lines         7079      7070    -9     
=========================================
- Hits          7079      7070    -9     

Impacted Files	Coverage Δ
fastapi/encoders.py	100.00% <100.00%> (ø)

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[github-actions]

📝 Docs preview for commit f11cf59 at: https://5f327c956d5d9f0191e31741--fastapi.netlify.app

[acutaia]

The tests for last commit where successful in my pc, i don't know why they failed here

[Kludex]

Can you run black, please?

[github-actions]

📝 Docs preview for commit 97d11b1 at: https://5f3430e411d03b998f48bde7--fastapi.netlify.app

[acutaia]

Can you run black, please?

Sorry, i forgot. Done ;)

[github-actions]

📝 Docs preview for commit d92451a at: https://5f344d1e87cbf1d48d9b6d26--fastapi.netlify.app

[github-actions]

📝 Docs preview for commit 93199a4 at: https://5f36391d0169f5d3976b6967--fastapi.netlify.app

[ycd]

In #1987 @tiangolo reverted the deletion of sqlalchemy_safe

https://github.com/tiangolo/fastapi/blob/e77ea635777d2494690ba3eb62bd005b9edeefde/fastapi/encoders.py#L71-L94

https://github.com/tiangolo/fastapi/blob/e77ea635777d2494690ba3eb62bd005b9edeefde/fastapi/encoders.py#L101-L113

An update should do good.

[acutaia]

@ycd done 😉

[github-actions]

📝 Docs preview for commit 99d86b2 at: https://5f4bc1c4b850664b6643d4a9--fastapi.netlify.app

[tiangolo]

Thanks for your effort! ☕

This was handled in another PR, the current Starlette version is 0.14.2, so I'm closing this one.