Fix immich fsGroup, keila tz autoupdate, revert open-webui

- immich: add fsGroup: 1000 so init container can write to PVC
- keila: set TZ_AUTOUPDATE=disabled to prevent tz library crash
  on read-only /opt/app/lib path in v0.30.3
- open-webui: revert to v0.9.5 — v0.12.x migration crashes on
  existing DB (duplicate column name: info_json)

keila/versions/0/deployment.yaml

@@ -58,6 +58,8 @@ spec:
               key: smtpPassword
         - name: MAILER_SMTP_FROM_EMAIL
           value: "{{ .smtp.from }}"
+        - name: TZ_AUTOUPDATE
+          value: "disabled"
         - name: DISABLE_REGISTRATION
           value: "{{ .disableRegistration }}"
         - name: KEILA_USER