Fix parse_dependencies regex to handle package extras (#20342)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: harupy <17039389+harupy@users.noreply.github.com>

Author: Copilot

dev/extract_deps.py

@@ -5,7 +5,7 @@
 
 
 def parse_dependencies(content: str) -> list[str]:
-    pattern = r"dependencies\s*=\s*(\[[\s\S]*?\])"
+    pattern = r"dependencies\s*=\s*(\[[\s\S]*?\])\n"
     match = re.search(pattern, content)
     if match is None:
         raise ValueError("Could not find dependencies in pyproject.toml")