chore(deps): update dependency microsoft.azure.cosmos to v3.38.0

Author: renovate[bot]

src/Akavache.CosmosDB/Akavache.CosmosDB.csproj

@@ -13,7 +13,7 @@
   <ItemGroup>
     <PackageReference Include="System.Reactive" Version="4.4.1" />
     <PackageReference Include="Splat" Version="9.*" />
-    <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.8.0" />
+    <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.38.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" $(TargetFramework.StartsWith('Xamarin.Mac')) ">