providers/oauth2: Add provider federation between OAuth2 Providers

[BeryJu]

Details

REPLACE ME

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Checklist

• Local tests pass (ak test authentik/)
• The code has been formatted (make lint-fix)

If an API change has been made

• The API schema has been updated (make gen-build)

If changes to the frontend have been made

• The code has been formatted (make web)

If applicable

• The documentation has been updated
• The documentation has been formatted (make website)

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✅ Deploy Preview for authentik-docs ready!

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[codecov]

Codecov Report

Attention: Patch coverage is 96.89922% with 4 lines in your changes missing coverage. Please review.

Project coverage is 92.68%. Comparing base (e077a5c) to head (2743bd3).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
authentik/providers/oauth2/views/token.py	89.74%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12083      +/-   ##
==========================================
+ Coverage   92.67%   92.68%   +0.01%     
==========================================
  Files         761      762       +1     
  Lines       38050    38151     +101     
==========================================
+ Hits        35263    35362      +99     
- Misses       2787     2789       +2     

Flag	Coverage Δ
e2e	49.09% <4.65%> (-0.13%)	⬇️
integration	24.76% <2.32%> (-0.07%)	⬇️
unit	90.22% <96.89%> (+0.01%)	⬆️

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[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-f888d395b50e2a0834ce41f73eef6de4521eb3ef
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

For arm64, use these values:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-f888d395b50e2a0834ce41f73eef6de4521eb3ef-arm64
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-f888d395b50e2a0834ce41f73eef6de4521eb3ef

For arm64, use these values:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-f888d395b50e2a0834ce41f73eef6de4521eb3ef-arm64

Afterwards, run the upgrade commands from the latest release notes.

[tanberry]

data source? "...define a JWKS URL/raw JWKS data in OAuth Sources." is an incomplete sentence, needs the noun.

[tanberry]

some suggested edits, but approving so that I am not the roadblock. ;-)