Bump the dotnet group with 3 updates (#46872)

Bumps Azure.Messaging.ServiceBus from 7.19.0 to 7.20.1
Bumps Azure.Security.KeyVault.Secrets from 4.7.0 to 4.8.0
Bumps Microsoft.Extensions.Azure from 1.11.0 to 1.12.0

---
updated-dependencies:
- dependency-name: Azure.Messaging.ServiceBus
  dependency-version: 7.20.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Azure.Security.KeyVault.Secrets
  dependency-version: 4.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Azure
  dependency-version: 1.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/azure/sdk/snippets/aspnetcore-guidance/BlazorSample/BlazorSample.csproj

@@ -7,10 +7,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Azure.Messaging.ServiceBus" Version="7.19.0" />
-	  <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.7.0" />
+    <PackageReference Include="Azure.Messaging.ServiceBus" Version="7.20.1" />
+	  <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.8.0" />
 	  <PackageReference Include="Azure.Storage.Blobs" Version="12.24.1" />
-	  <PackageReference Include="Microsoft.Extensions.Azure" Version="1.11.0" />
+	  <PackageReference Include="Microsoft.Extensions.Azure" Version="1.12.0" />
   </ItemGroup>
 
 </Project>