fix #2830 Autorization segment typo fixed

This fixes the parsing of the authorization segment in the response of
an order. Without this fix the start of the array is not found
correctly and therefore the finalize URL is part of the authorization
segment. Changing the regex to *\[[^\[]*\] fix this. Seems to be a typo
which has not been recognized so far. This can be only recognized if
the response is in a single line.

acme.sh

@@ -4019,7 +4019,7 @@ issue() {
       #for dns manual mode
       _savedomainconf "Le_OrderFinalize" "$Le_OrderFinalize"
 
-      _authorizations_seg="$(echo "$response" | _egrep_o '"authorizations" *: *\[[^\]*\]' | cut -d '[' -f 2 | tr -d ']' | tr -d '"')"
+      _authorizations_seg="$(echo "$response" | _egrep_o '"authorizations" *: *\[[^\[]]*\]' | cut -d '[' -f 2 | tr -d ']' | tr -d '"')"
       _debug2 _authorizations_seg "$_authorizations_seg"
       if [ -z "$_authorizations_seg" ]; then
         _err "_authorizations_seg not found."