Update cognito extensions version (#261)

Author: GarrettBeatty

.autover/changes/b04c20cf-5e0d-41fc-b747-c9e0b9cafca7.json

@@ -0,0 +1,11 @@
+{
+  "Projects": [
+    {
+      "Name": "Amazon.AspNetCore.Identity.Cognito",
+      "Type": "Patch",
+      "ChangelogMessages": [
+        "Updated cognito extensions version"
+      ]
+    }
+  ]
+}

src/Amazon.AspNetCore.Identity.Cognito/Amazon.AspNetCore.Identity.Cognito.csproj

@@ -29,7 +29,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Amazon.Extensions.CognitoAuthentication" Version="2.5.2" />
+    <PackageReference Include="Amazon.Extensions.CognitoAuthentication" Version="2.5.6" />
     <PackageReference Include="AWSSDK.CognitoIdentity" Version="3.7.300.74" />
     <PackageReference Include="AWSSDK.CognitoIdentityProvider" Version="3.7.303.19" />
     <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="3.7.300" />