ci: use forked release action to deal with large release notes (cherry-pick #17625 to version-2025.10)

[authentik-automation]

Cherry-pick of #17625 to version-2025.10 branch.

Original PR: #17625
Original Author: @BeryJu
Cherry-picked commit: fa10a29

[netlify]

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[netlify]

✅ Deploy Preview for authentik-docs ready!

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.93%. Comparing base (d4a7758) to head (3405c68).
⚠️ Report is 2 commits behind head on version-2025.10.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           version-2025.10   #17626      +/-   ##
===================================================
- Coverage            92.97%   92.93%   -0.05%     
===================================================
  Files                  868      868              
  Lines                47913    47913              
===================================================
- Hits                 44548    44528      -20     
- Misses                3365     3385      +20     

Flag	Coverage Δ
e2e	45.28% <ø> (+0.01%)	⬆️
integration	23.12% <ø> (-0.07%)	⬇️
unit	91.07% <ø> (-0.01%)	⬇️
unit-migrate	91.12% <ø> (ø)

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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-3405c6881b7989cdf60fddb9de5582696b6130fa
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-3405c6881b7989cdf60fddb9de5582696b6130fa

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