providers/oauth2: offline access (#8026)

* improve scope check (log when application requests non-configured scopes)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* add offline_access special scope

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* ensure scope is set

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* update tests for refresh tokens

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* special handling of scopes for github compat

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix spec

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* attempt to fix oidc tests

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* remove hardcoded slug

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* check scope from authorization code instead of request

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix injection for consent stage checking incorrectly

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

website/docs/releases/2024/v2024.1.md

@@ -17,6 +17,12 @@ slug: "/releases/2024.1"
     -   `authentik_outpost_radius_requests_rejected` -> `authentik_outpost_radius_requests_rejected_total`
     -   `authentik_main_requests` -> `authentik_main_request_duration_seconds`
 
+-   Required `offline_access` scope for Refresh tokens
+
+    The OAuth2 provider ships with a new default scope called `offline_access`, which must be requested by applications that need a refresh token. Previously, authentik would always issue a refresh token for the _Authorization code_ and _Device code_ OAuth grants.
+
+    Applications which require will need their configuration update to include the `offline_access` scope mapping.
+
 ## New features
 
 -   "Pretend user exists" option for Identification stage