servarr + plex: bump image tags

- sonarr     version-4.0.16.2944 -> version-4.0.17.2952  (patch within 4.0.x)
  - radarr×2   version-6.0.4.10291 -> version-6.1.1.10360  (minor within 6.x)
  - prowlarr   version-2.3.0.5236  -> version-2.3.5.5327   (patch within 2.3.x)
  - plex       1.43.0.10467-...    -> 1.43.2.10687-...     (patch within 1.43.x)

All four were stuck because of tag-format issues that I addressed in
PR #82 (servarr customManager) / PR #83. Renovate isn't auto-creating
the PRs yet (DH rate-limit), so doing them manually so version-checker
clears.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

helm/plex/values.yaml

@@ -4,7 +4,7 @@ image:
   registry: index.docker.io
   repository: plexinc/pms-docker
   # renovate: datasource=custom.plex depName=plex versioning=loose
-  tag: "1.43.0.10467-2b1ba6e69"
+  tag: "1.43.2.10687-563d026ea"
   sha: ""
   pullPolicy: IfNotPresent