fix: [nextcloud] check correctly for existing version

nextcloud/actions/upgrade

@@ -129,7 +129,7 @@ if [ -z "$target" ]; then
     info "Target latest version: ${WHITE}${last_available_versions[0]}${NORMAL}"
     target=${last_upgradable_versions[0]}
 else
-    if [[ "* $target *" != " ${last_available_versions[*]} " ]]; then
+    if [[ " ${last_available_versions[*]} " != *" $target "* ]]; then
         err "Invalid version $target selected, please specify one of:"
         for v in "${last_upgradable_versions[@]}"; do
             echo " - $v"