chore: Update gapic-generator-python to v1.11.4 (#136)

* chore: Update gapic-generator-python to v1.11.4

PiperOrigin-RevId: 547897126

Source-Link: googleapis/googleapis@c09c75e

Source-Link: googleapis/googleapis-gen@45e0ec4
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNDVlMGVjNDM0MzUxN2NkMGFhNjZiNWNhNjQyMzJhMTgwMmMyZjk0NSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

packages/google-cloud-optimization/google/cloud/optimization_v1/types/fleet_routing.py

@@ -3290,6 +3290,7 @@ class VehicleLoad(proto.Message):
     class EncodedPolyline(proto.Message):
         r"""The encoded representation of a polyline. More information on
         polyline encoding can be found here:
+
         https://developers.google.com/maps/documentation/utilities/polylinealgorithm
         https://developers.google.com/maps/documentation/javascript/reference/geometry#encoding.