[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

jupyterhub/values.yaml

@@ -671,7 +671,7 @@ prePuller:
       annotations: {}
   continuous:
     enabled: true
-    serviceAccount: 
+    serviceAccount:
       create: true
       name:
       annotations: {}