Release Google.Cloud.AIPlatform.V1 version 3.20.0

[jskeet]

Changes in this release:

New features

• Add VertexAISearch.engine option (commit cffeac2)
• Add EnterpriseWebSearch tool option (commit 1b04726)

[github-actions]

Pull request diff results
Finding changes in Google.Cloud.AIPlatform.V1...
Comparing old and new versions (by source)
Diff level: Identical

Comparing with previous NuGet package
Checking compatibility for Google.Cloud.AIPlatform.V1 version 3.20.0
Differences from 3.19.0
Minor changes:
Class 'EnterpriseWebSearch' added.
Class 'Tool'; property 'EnterpriseWebSearch EnterpriseWebSearch { get; set; }' added.
Class 'Tool'; property 'Tool.Types.GoogleSearch GoogleSearch { get; set; }' added.
Class 'Tool'; constant 'System.Int32 Google.Cloud.AIPlatform.V1.Tool::EnterpriseWebSearchFieldNumber' added.
Class 'Tool'; constant 'System.Int32 Google.Cloud.AIPlatform.V1.Tool::GoogleSearchFieldNumber' added.
Class 'Tool.Types.GoogleSearch' added.
Class 'VertexAISearch'; property 'String Engine { get; set; }' added.
Class 'VertexAISearch'; constant 'System.Int32 Google.Cloud.AIPlatform.V1.VertexAISearch::EngineFieldNumber' added.

Diff level: Minor

Finished comparisons for Google.Cloud.AIPlatform.V1

[yoshi-automation]

• Created release for Google.Cloud.AIPlatform.V1-3.20.0