Bump Azure.Storage.Blobs from 12.4.1 to 12.13.0 in /ImageServer.Core (#20)

Bumps [Azure.Storage.Blobs](https://github.com/Azure/azure-sdk-for-net) from 12.4.1 to 12.13.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.Storage.Blobs_12.4.1...Azure.Storage.Blobs_12.13.0)

---
updated-dependencies:
- dependency-name: Azure.Storage.Blobs
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ImageServer.Core/ImageServer.Core.csproj

@@ -17,7 +17,7 @@
     <None Remove="wwwroot\**" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Azure.Storage.Blobs" Version="12.4.1" />
+    <PackageReference Include="Azure.Storage.Blobs" Version="12.13.0" />
     <PackageReference Include="Google.Cloud.Storage.V1" Version="2.5.0" />
     <PackageReference Include="Magick.NET-Q16-AnyCPU" Version="7.15.4" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="3.1.2" />