Issue #3508273 by jwilson3: Update ddev-drupal-contrib to 1.1.5

Resolve ddev symlink-project errors by updating to the latest stable version of ddev-drupal-contrib:

 ddev symlink-project
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  4069  100  4069    0     0   6772      0 --:--:-- --:--:-- --:--:--  6781
PHP Fatal error:  Uncaught RuntimeException: Positional parameters are no longer used. Ignoring label_help in /var/www/html/symlink_project.php:36
Stack trace:
#0 {main}
  thrown in /var/www/html/symlink_project.php on line 36

Fatal error: Uncaught RuntimeException: Positional parameters are no longer used. Ignoring label_help in /var/www/html/symlink_project.php:36
Stack trace:
#0 {main}
  thrown in /var/www/html/symlink_project.php on line 36

Closes #3508273