ci(renovate): fix plugin-barman-cloud-base image updates (#578)

Closes #576

Signed-off-by: Marco Nenciarini <[email protected]>

Author: mnencia

renovate.json5

@@ -59,6 +59,12 @@
     enabled: false,
   },
   packageRules: [
+    {
+      matchPackageNames: [
+       'ghcr.io/cloudnative-pg/plugin-barman-cloud-base',
+      ],
+      versioning: 'loose',
+    },
     {
       matchDatasources: [
         'go',