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

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

Author: pre-commit-ci[bot]

repo2docker/buildpacks/pyproject/__init__.py

@@ -34,7 +34,7 @@ def python_version(self):
         if "project" in pyproject_toml:
             if "requires-python" in pyproject_toml["project"]:
                 raw_version = pyproject_toml["project"]["requires-python"]
-                
+
                 match = VERSION_PAT.match(raw_version)
                 if match:
                     return match.group()
@@ -121,4 +121,4 @@ def detect(self):
 
         pyproject_file = self.binder_path("pyproject.toml")
 
-        return os.path.exists(pyproject_file)
+        return os.path.exists(pyproject_file)