Allow aiofiles 0.6.x.

[musicinmybrain]

Release notes for 0.6.0 (https://pypi.org/project/aiofiles/) show one
API change:
“Added name and mode properties to async file objects.”
(Tinche/aiofiles#82)

[codecov]

Codecov Report

Merging #3075 (1b2db7f) into master (ce0ec06) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #3075   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          243       243           
  Lines         7419      7419           
=========================================
  Hits          7419      7419           

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[github-actions]

📝 Docs preview for commit 1b2db7f at: https://60743906d92fe60bd9e4d0f1--fastapi.netlify.app

[Kludex]

Duplicated: #2899

[musicinmybrain]

Thanks, closing in favor of the previous PR.

[tiangolo]

Thank you both! 🍰

Sorry for the long delay! 🙈 I wanted to personally address each issue/PR and they piled up through time, but now I'm checking each one in order.