6176- upgrade gunicorn to v.23.0.0

[cnlucas]

Summary (required)

• Resolves [Snyk: High] gunicorn HTTP Request Smuggling (Due: 05/01/25) #6176

Upgrades gunicorn to 23.0.0 to remediate snyk vulnerability

Breaking Changes
refuse requests where the uri field is empty
refuse requests with invalid CR/LR/NUL in heade field values
remove temporary --tolerate-dangerous-framing switch from 22.0

Required reviewers

1 dev

Impacted areas of the application

General components of the application that this PR will affect:

• gunicorn servers

Related PRs

Related PRs against other branches:
fecgov/fec-cms#6743

How to test

• gh pr checkout 6187
• gunicorn --access-logfile - --error-logfile - --log-level info --timeout 300 -k gevent -w 4 'webservices.rest:create_app()'
• http://127.0.0.1:8000
• http://127.0.0.1:8000/v1/schedules/schedule_d/?page=1&per_page=20&sort=-coverage_end_date&sort_hide_null=false&sort_null_only=false&sort_nulls_last=false

OR

• Deploy to a space

[fec-jli]

It works as expected. Thanks