Release Google.Cloud.AdvisoryNotifications.V1 version 1.6.0 (#12599)

Changes in this release:

### New features

- Add GetSettings and UpdateSettings methods at the Project-level to advisorynotifications.googleapis.com ([commit cd4bef0](https://togithub.com/googleapis/google-cloud-dotnet/commit/cd4bef0c7b9994dd3e3b0291e9ed566f4d9019c5))

### Documentation improvements

- Adding docs for new project level settings methods ([commit cd4bef0](https://togithub.com/googleapis/google-cloud-dotnet/commit/cd4bef0c7b9994dd3e3b0291e9ed566f4d9019c5))

apis/Google.Cloud.AdvisoryNotifications.V1/Google.Cloud.AdvisoryNotifications.V1/Google.Cloud.AdvisoryNotifications.V1.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>1.5.0</Version>
+    <Version>1.6.0</Version>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Description>An API for accessing Advisory Notifications in Google Cloud</Description>

apis/Google.Cloud.AdvisoryNotifications.V1/docs/history.md

@@ -1,5 +1,15 @@
 # Version history
 
+## Version 1.6.0, released 2024-04-19
+
+### New features
+
+- Add GetSettings and UpdateSettings methods at the Project-level to advisorynotifications.googleapis.com ([commit cd4bef0](https://github.com/googleapis/google-cloud-dotnet/commit/cd4bef0c7b9994dd3e3b0291e9ed566f4d9019c5))
+
+### Documentation improvements
+
+- Adding docs for new project level settings methods ([commit cd4bef0](https://github.com/googleapis/google-cloud-dotnet/commit/cd4bef0c7b9994dd3e3b0291e9ed566f4d9019c5))
+
 ## Version 1.5.0, released 2024-03-26
 
 ### New features

apis/apis.json

@@ -210,7 +210,7 @@
     },
     {
       "id": "Google.Cloud.AdvisoryNotifications.V1",
-      "version": "1.5.0",
+      "version": "1.6.0",
       "type": "grpc",
       "productName": "Advisory Notifications",
       "productUrl": "https://cloud.google.com/advisory-notifications/docs/overview",