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

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

Author: pre-commit-ci[bot]

jupyter_releaser/util.py

@@ -469,7 +469,7 @@ def extract_metadata_from_release_url(gh, release_url, auth):
         os.environ["RH_BRANCH"] = data["branch"]
     if "since" in data:
         os.environ["RH_SINCE"] = data["since"]
-    if 'ref' in data:
+    if "ref" in data:
         os.environ["RH_REF"] = data["ref"]
     if "since_last_stable" in data:
         os.environ["RH_SINCE_LAST_STABLE"] = str(data["since_last_stable"])