root: rework CSRF middleware to set secure flag

[BeryJu]

Details

Remove the custom CSRF subclass which sets the Secure flag dynamically, as when the SECURE flag is set statically it is still handled correctly for http/local

closes #11760

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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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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 92.68%. Comparing base (d3d96b7) to head (99d6996).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
authentik/root/middleware.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11753      +/-   ##
==========================================
- Coverage   92.69%   92.68%   -0.01%     
==========================================
  Files         745      745              
  Lines       37005    37003       -2     
==========================================
- Hits        34300    34297       -3     
- Misses       2705     2706       +1     

Flag	Coverage Δ
e2e	49.29% <0.00%> (-0.01%)	⬇️
integration	25.00% <0.00%> (+<0.01%)	⬆️
unit	90.23% <0.00%> (-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-99d6996dce4dc9e09f39161a5472883ffcac9413
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-99d6996dce4dc9e09f39161a5472883ffcac9413-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-99d6996dce4dc9e09f39161a5472883ffcac9413

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-99d6996dce4dc9e09f39161a5472883ffcac9413-arm64

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