chore(python): updates jinja template to control blank line whitespace

Source-Link: googleapis/synthtool@34a69c3
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:4a8232300a61a84d0434631f35a44faef47b515d8443b63276d60b5cf7211a63

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,4 +1,4 @@
-# Copyright 2024 Google LLC
+# Copyright 2025 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:5efdf8d38e5a22c1ec9e5541cbdfde56399bdffcb6f531183f84ac66052a8024
-# created: 2024-10-25
+  digest: sha256:4a8232300a61a84d0434631f35a44faef47b515d8443b63276d60b5cf7211a63
+# created: 2025-02-19T11:07:47.623260933Z

.kokoro/docker/docs/requirements.in

@@ -1 +1,2 @@
 nox
+gcp-docuploader