fix(gitlab): Remove prefetch of users read in script to address timeouts

While less efficient during the run, the precache of users due to spam accounts has grown too large and crashes the script. In place, we will have a user cache that fetches users as needed from the API and inserting them into the cache.

src/scripts/gl/GitlabWrapper.ts

@@ -411,14 +411,9 @@ export class GitlabWrapper {
       this.logger.info('Populating Issues cache');
       this.issuesCache = Array.from(await this.api.Issues.all({ author_username: this.config.user }));
 
-      this.logger.info('Populating Gitlab users cache');
-      const users = await this.api.Users.all();
-
-      this.logger.info('Mapping Gitlab users');
+      // we cannot fetch all users for cache here as it times out the entire script
+      // instead, we will have a simple map of username => user object fetched as needed
       this.namedUsersCache = {};
-      for (const user of users as Array<SimpleUserSchema>) {
-        this.namedUsersCache[user.username] = user;
-      }
     } catch (e) {
       this.logger.error(e);
       this.logger.error(`Cannot fetch resources associated with sync operations, exiting: ${e}`);