website/docs: upgrade: make it clear downgrading is not support

[rissson]

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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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.76%. Comparing base (ff53bcc) to head (ad92962).

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11523      +/-   ##
==========================================
+ Coverage   92.67%   92.76%   +0.08%     
==========================================
  Files         736      736              
  Lines       36510    36510              
==========================================
+ Hits        33837    33868      +31     
+ Misses       2673     2642      -31     

Flag	Coverage Δ
e2e	49.28% <ø> (+0.11%)	⬆️
integration	24.98% <ø> (ø)
unit	90.25% <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-ad92962859ffa82bc39d2722126d6cd82a48b907
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-ad92962859ffa82bc39d2722126d6cd82a48b907-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-ad92962859ffa82bc39d2722126d6cd82a48b907

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-ad92962859ffa82bc39d2722126d6cd82a48b907-arm64

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

[BeryJu]

LGTM cc @tanberry