Discourse app fixes.

apps/discourse/manifest.yaml

@@ -6,8 +6,6 @@ requires:
   - name: postgres
   - name: redis
 defaultConfig:
-  image: docker.io/bitnami/discourse:3.4.7-debian-12-r0
-  sidekiqImage: docker.io/bitnami/discourse:3.4.7-debian-12-r0
   timezone: UTC
   port: 8080
   storage: 10Gi
@@ -32,7 +30,7 @@ requiredSecrets:
   - apps.discourse.adminPassword
   - apps.discourse.dbPassword
   - apps.discourse.dbUrl
-  - apps.discourse.redisPassword
+  - apps.redis.password
   - apps.discourse.secretKeyBase
   - apps.discourse.smtpPassword
   - apps.postgres.password