pin typing_extensions to version 4.5.0

[adamsachs]

Closes #3358

Workaround for pydantic/pydantic#5821

Code Changes

• pin typing_extensions==4.5.0 in our requirements.txt to bypass Cannot use Literal when I use typing-extension==4.6.0 pydantic/pydantic#5821

Steps to Confirm

• CI jobs for python < 3.10 should pass
• server should boot successfully in a python 3.9 or 3.8 environment
• app should run as normal (i.e., no regressions)

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
• Update CHANGELOG.md
• For API changes, the Postman collection has been updated

Description Of Changes

Caused by pydantic/pydantic#5821. Our backend-check CI jobs that run on python < 3.10 were failing.

[cypress]

Passing run #2125 ↗︎

0	4	0	0	0
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Details:

Merge 7151765 into 52bcd75...
Project: fides	Commit: 7e5529f8a6 ℹ️
Status: Passed	Duration: 00:47 💡
Started: May 23, 2023 4:04 PM	Ended: May 23, 2023 4:05 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (52bcd75) 87.07% compared to head (7151765) 87.07%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3357   +/-   ##
=======================================
  Coverage   87.07%   87.07%           
=======================================
  Files         313      313           
  Lines       18997    18997           
  Branches     2474     2474           
=======================================
  Hits        16541    16541           
  Misses       2014     2014           
  Partials      442      442           

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[NevilleS]

✅ LGTM, thanks!

[NevilleS]

✅ LGTM, thanks!