And update Cosmos version

Author: DavidBoike

src/NServiceBus.Persistence.CosmosDB/NServiceBus.Persistence.CosmosDB.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Particular.Packaging" Version="1.2.1" PrivateAssets="All" />
     <PackageReference Include="NServiceBus" Version="[7.1.10, 8.0.0)" />
-    <PackageReference Include="Microsoft.Azure.Cosmos" Version="[3.15.0, 4)" />
+    <PackageReference Include="Microsoft.Azure.Cosmos" Version="[3.20.1, 4)" />
   </ItemGroup>
 
-</Project>
+</Project>