Upgrade to Akka.NET v1.5.25 (#467)

Author: Aaronontheweb

src/Directory.Build.props

@@ -25,7 +25,7 @@
         <TestSdkVersion>17.10.0</TestSdkVersion>
         <CoverletVersion>6.0.2</CoverletVersion>
 	    <XunitRunneVisualstudio>2.8.1</XunitRunneVisualstudio>
-        <AkkaVersion>1.5.24</AkkaVersion>
+        <AkkaVersion>1.5.25</AkkaVersion>
         <MicrosoftExtensionsVersion>[6.0.0,)</MicrosoftExtensionsVersion>
     </PropertyGroup>