fix(backups/cleanVm): wait for unreferenced VHDs to be deleted

Introduced by 249f63849

@xen-orchestra/backups/_cleanVm.js

@@ -169,7 +169,7 @@ async function checkAliases(
     prependDir: true,
   })
 
-  vhds.forEach(async path => {
+  await asyncMap(vhds, async path => {
     if (!aliasFound.includes(path)) {
       logWarn('no alias references VHD', { path })
       if (remove) {

CHANGELOG.unreleased.md

@@ -29,6 +29,7 @@
 
 <!--packages-start-->
 
+- @xen-orchestra/backups patch
 - @xen-orchestra/mixins minor
 - @xen-orchestra/proxy minor
 - xo-server minor