chore(deps): update bitnami/discourse docker tag to v3.4.0 (#3208)

* chore(deps): update bitnami/discourse docker tag to v3.4.0

* Update app version [skip ci]

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: github-action update-app-version <githubaction@githubaction.com>

discourse/3.4.0/docker-compose.yml

@@ -1,6 +1,6 @@
   services:
     discourse:
-      image: bitnami/discourse:3.3.3
+      image: bitnami/discourse:3.4.0
       container_name: ${CONTAINER_NAME}
       restart: always
       networks:
@@ -33,7 +33,7 @@
       labels:
         createdBy: "Apps"
     sidekiq:
-      image: bitnami/discourse:3.3.3
+      image: bitnami/discourse:3.4.0
       container_name: ${CONTAINER_NAME}-sidekiq
       restart: always
       networks: