Pin fastapi test version to 0.87.0

[freddyaboulton]

Description

Looks like the new fastapi version (0.87.0, released yesterday) has a hard pin on starlette 0.21.0 which introduces breaking changes to the testclient.

fastapi/fastapi#5471

Rather than putting a pin in the version in requirements.txt (which would force all users to upgrade fastapi/starlette versions), I am only putting a pin in the version of fastapi installed for the unit tests.

Checklist:

• I have performed a self-review of my own code
• I have added a short summary of my change to the CHANGELOG.md
• My code follows the style guidelines of this project
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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[abidlabs]

@freddyaboulton should we update the tests themselves instead to use the latest version of fastapi? Don't have a strong opinion, but looks like there is a handy bump tool

[freddyaboulton]

@abidlabs Either works but not both. Either we do >=0.87 or ==0.86.0 in requirements.in. Given that the only difference is in TestClient I didn't see the need to upgrade and change the code. What do you think/prefer? We can also upgrade later if we want if we don't upgrade now. This won't be user facing.

[abidlabs]

My preference would be to upgrade if it's not a lot of work, so that we are up-to-date in our version of fastapi. But I agree with you, either could work for now

[github-actions]

All the demos for this PR have been deployed at https://huggingface.co/spaces/gradio-pr-deploys/pr-2647-all-demos

[freddyaboulton]

@abidlabs Upgraded to 0.87 instead!

[abidlabs]

Cool LGTM thanks @freddyaboulton!