Release 2026.5.8

See https://docs.goauthentik.io/docs/releases/2026.5#fixed-in-202658

What's Changed

• ci: remove the Google Chrome apt source in setup (cherry-pick #25990 to version-2026.5) by @authentik-cherry-pick[bot] in #26011
• lib/expression: fix PickleError due to resolver match when using ak_call_policy (cherry-pick #25763 to version-2026.5) by @authentik-cherry-pick[bot] in #26071
• web/source/flows: fix flicker after webauthn (cherry-pick #25454 to version-2026.5) by @authentik-cherry-pick[bot] in #25835
• core: bump rustls (cherry-pick #26142 to version-2026.5) by @authentik-cherry-pick[bot] in #26144
• website: add umami (cherry-pick #26460 to version-2026.5) by @authentik-cherry-pick[bot] in #26462
• packages/django-channels-postgres: refresh pool credentials on connection attempts (cherry-pick #26505 to version-2026.5) by @authentik-cherry-pick[bot] in #26549
• web/flows: check if localStorage is available for continuous login (cherry-pick #26267 to version-2026.5) by @authentik-cherry-pick[bot] in #26639
• root: don't fail websocket connections with non-UTF-8 headers (cherry-pick #26688 to version-2026.5) by @authentik-cherry-pick[bot] in #26707
• stages/consent: fix integrity error when re-consenting after consent expired (cherry-pick #26866 to version-2026.5) by @authentik-cherry-pick[bot] in #26871
• ci: switch version bump to action, like platform repo (cherry-pick #26949 to version-2026.5) by @authentik-cherry-pick[bot] in #26951
• root: bump cert-related deps due to emudhra (cherry-pick #27068 to version-2026.5) by @authentik-cherry-pick[bot] in #27070

Full Changelog: version/2026.5.7...version/2026.5.8