[chore] NodeJS 12 (#2722)

* chore: upgraded node 12, more log lines

- upgraded from 10 LTS to 12 LTS
- added log line with userID to GraphQL
  log entry

* fix: adjusted some intl formats

src/core/server/graph/common/extensions/LoggerExtension.ts

@@ -23,7 +23,9 @@ export function logQuery(
   ctx.logger.info(
     {
       responseTime,
+      // deprecated: use of the `authenticated` log field is deprecated in favour of the `userID` field
       authenticated: ctx.user ? true : false,
+      userID: ctx.user ? ctx.user.id : null,
       ...(persisted
         ? // A persisted query was provided, we can pull the operation metadata
           // out from the persisted object.