style: apply black via pre-commit run -a

bin/make_dependency_update_pr.py

@@ -31,10 +31,9 @@ def main():
         print('Your git repo has uncommitted changes. Commit or stash before continuing.')
         sys.exit(1)
 
-    previous_branch = shell('git rev-parse --abbrev-ref HEAD',
-                            check=True,
-                            capture_output=True,
-                            encoding='utf8').stdout.strip()
+    previous_branch = shell(
+        'git rev-parse --abbrev-ref HEAD', check=True, capture_output=True, encoding='utf8'
+    ).stdout.strip()
 
     shell('git fetch origin', check=True)
 
@@ -51,20 +50,24 @@ def main():
             return
 
         shell('git commit -a -m "Update dependencies"', check=True)
-        body = textwrap.dedent(f'''
+        body = textwrap.dedent(
+            f'''
                     Update the versions of our dependencies.
 
                     PR generated by `{os.path.basename(__file__)}`.
-                ''')
+                '''
+        )
         run(
             [
-                'gh', 'pr', 'create',
+                'gh',
+                'pr',
+                'create',
                 '--repo=joerick/cibuildwheel',
                 '--base=master',
                 "--title=Update dependencies",
                 f"--body='{body}'",
             ],
-            check=True
+            check=True,
         )
 
         print('Done.')