chore(python): add requirements for docs build (#288)

Source-Link: googleapis/synthtool@85c23b6
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:3741fd1f5f5150378563c76afa06bcc12777b5fe54c5ee01115218f83872134f

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

Author: gcf-owl-bot[bot]

packages/google-cloud-documentai-toolbox/.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:a8a80fc6456e433df53fc2a0d72ca0345db0ddefb409f1b75b118dfd1babd952
-# created: 2024-03-15T16:25:47.905264637Z
+  digest: sha256:d0e70b7cbce0f340c4755bafee5c1ef754c4e83927ecce8988f4f4c530572f61
+# created: 2024-03-18T16:26:15.743347415Z

packages/google-cloud-documentai-toolbox/.github/auto-label.yaml

@@ -13,3 +13,8 @@
 # limitations under the License.
 requestsize:
   enabled: true
+
+path:
+  pullrequest: true
+  paths:
+    samples: "samples"

packages/google-cloud-documentai-toolbox/.github/blunderbuss.yml

@@ -0,0 +1,17 @@
+# Blunderbuss config
+#
+# This file controls who is assigned for pull requests and issues.
+# Note: This file is autogenerated. To make changes to the assignee
+# team, please update `codeowner_team` in `.repo-metadata.json`.
+assign_issues:
+  - googleapis/cdpe-cloudai
+
+assign_issues_by:
+  - labels:
+      - "samples"
+    to:
+      - googleapis/python-samples-reviewers
+      - googleapis/cdpe-cloudai
+
+assign_prs:
+  - googleapis/cdpe-cloudai