[chore] Release 3.1.0 (#432)

Author: jonathanedey

FirebaseAdmin/FirebaseAdmin/FirebaseAdmin.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <Version>3.0.1</Version>
+    <Version>3.1.0</Version>
     <TargetFrameworks>netstandard2.0;net462;net6.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>