chore: publish 5.2.1+v3.0.20 release

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* [x] I have deployed and tested my changes
* [x] I have [updated relevant versions in `abra.sh`](https://docs.coopcloud.tech/maintainers/upgrade/#updating-versions-in-the-abrash)
* [x] I have made my environment variable changes [backwards compatible](https://docs.coopcloud.tech/maintainers/upgrade/#backwards-compatible-environment-variable-changes)
* [x] I have added a [release note entry](https://docs.coopcloud.tech/maintainers/upgrade/#creating-new-release-notes)

Info for release notes:

> Up until now the backups only worked sporadically, as they used the database volume and not the dump due to wring path. Upgrading to this version will start produce reliable backups. Older backups cannot be restored with backup bot anymore, and should be copied manually. (In case there is a working one)

Reviewed-on: #30
Reviewed-by: Jackie Makdah <jackiemak22@proton.me>
Co-authored-by: stevensting <stefan@klasse-methode.it>
Co-committed-by: stevensting <stefan@klasse-methode.it>

compose.yml

@@ -70,7 +70,7 @@ services:
         - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`${EXTRA_DOMAINS})"
         - "traefik.http.routers.${STACK_NAME}.entrypoints=web-secure"
         - "traefik.http.routers.${STACK_NAME}.tls.certresolver=${LETS_ENCRYPT_ENV}"
-        - "coop-cloud.${STACK_NAME}.version=5.2.0+v3.0.20"
+        - "coop-cloud.${STACK_NAME}.version=5.2.1+v3.0.20"
         - "backupbot.backup:=${ENABLE_BACKUPS:-true}"
         - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}"
         - "traefik.http.middlewares.${STACK_NAME}.headers.accesscontrolallowmethods=GET,OPTIONS,PUT"

pg_backup.sh

@@ -58,15 +58,13 @@ function restore {
 # Execute the function passed as argument
 case "$1" in
   backup)
-    echo "oh you wanna backup??"
-    exit 1
+    backup
     ;;
   restore)
-    echo "oh you wanna restore??"
-    exit 1
+    restore
     ;;
   *)
     echo "Usage: $0 {backup|restore}"
     exit 1
     ;;
-esac
+esac

release/5.2.1+v3.0.20

@@ -0,0 +1 @@
+Backup script improvements contributed by stevensting