fix(get_users):Fix get_users hire_dates_inv get

jobs/eam-integrations/scripts/workday_everfi/api/Everfi/everfi.py

@@ -142,7 +142,10 @@ class EverfiAPI():
             if rec.get('relationships','').get('category_labels',''):
                 if len(rec.get('relationships','').get('category_labels','').get('data',''))>0:
                     hire_date_id = rec.get('relationships','').get('category_labels','').get('data','')[0].get('id')
-                    hire_date = hire_dates_inv[hire_date_id]
+                    if hire_dates_inv.get(hire_date_id):
+                        hire_date = hire_dates_inv[hire_date_id]
+                    else:
+                        hire_date = ''
                 else:
                     hire_date = ''