Bump Azure.Messaging.ServiceBus from 7.14.0 to 7.15.0 (#525)

Bumps [Azure.Messaging.ServiceBus](https://github.com/Azure/azure-sdk-for-net) from 7.14.0 to 7.15.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.Messaging.ServiceBus_7.14.0...Azure.Messaging.ServiceBus_7.15.0)

---
updated-dependencies:
- dependency-name: Azure.Messaging.ServiceBus
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/Tingle.EventBus.Transports.Azure.ServiceBus/Tingle.EventBus.Transports.Azure.ServiceBus.csproj

@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Azure.Messaging.ServiceBus" Version="7.14.0" />
+    <PackageReference Include="Azure.Messaging.ServiceBus" Version="7.15.0" />
   </ItemGroup>
 
   <ItemGroup>