chore: cleanup style in bin (#648)

* chore: cleanup style for bump_version

* chore: cleanup style for other bin items

bin/make_dependency_update_pr.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python3
 
+from __future__ import annotations
+
 import os
 import sys
 import textwrap
@@ -49,17 +51,18 @@ def main():
             return
 
         shell('git commit -a -m "Update dependencies"', check=True)
-        run(
-            [
-                'gh', 'pr', 'create',
-                '--repo', 'joerick/cibuildwheel',
-                '--base', 'master',
-                '--title', 'Update dependencies',
-                '--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',
+                '--repo=joerick/cibuildwheel',
+                '--base=master',
+                "--title='Update dependencies'",
+                f"--body='{body}'",
             ],
             check=True
         )