chore(deps): Update lscr.io/linuxserver/sonarr Docker tag to v4.0.20

catalog/sonarr.yaml

@@ -8,7 +8,7 @@
 name: sonarr
 kind: container
 source:
-  image: lscr.io/linuxserver/sonarr:4.0.15   # pinned stable v4 tag (R-UPD-01); update.range governs advancement
+  image: lscr.io/linuxserver/sonarr:4.0.20   # pinned stable v4 tag (R-UPD-01); update.range governs advancement
 # LinuxServer images run their service as the user `abc`, whose uid/gid these two set. They are
 # LOAD-BEARING for the bulk mount, not cosmetic: see the storage note below. The default is 911,
 # which cannot write a 1000:3000-owned 0755 tree.