Resolve #3380618 "Update bot on gitlab"

Closes #3380618

issues_bot/src/DrupalOrg/IssueCreator.php

@@ -40,6 +40,7 @@ class IssueCreator extends IssueBase {
     $job_repo = Settings::getRequiredSetting('job_repo');
 
     $git_dir = static::getBaseDir() . '/phpstan_run/project_analysis_results';
+    mkdir($git_dir, 0777, TRUE);
     chdir(static::getBaseDir());
 
     // Reset results