Update get-metrics.py

Author: jukent

.github/workflows/get-metrics.py

@@ -11,7 +11,7 @@
 COOKBOOKS_ID = os.environ.get('COOKBOOKS_ID')
 
 PRIVATE_KEY_ID = os.environ.get('PRIVATE_KEY_ID')
-PRIVATE_KEY = os.environ.get('PRIVATE_KEY')
+PRIVATE_KEY = os.environ.get('PRIVATE_KEY').replace('\\n','\n')
 print('Key ',len(PRIVATE_KEY))
 credentials_dict = {
   "type": "service_account",