Google.Api.Gax version 3.5.0-beta01

The purpose of this release is to allow testing of updated REGAPIC code.

Changes since 3.5.0-alpha01:

- Include more error information in REGAPIC errors
- Dependency updates
- Setting the default gRPC max-receive-size to 2GB

ReleaseVersion.xml

@@ -5,6 +5,6 @@
     - divergent versions, but for the moment this keeps things simpler.
     -->
   <PropertyGroup>
-    <Version>3.5.0-alpha01</Version>
+    <Version>3.5.0-beta01</Version>
   </PropertyGroup>
 </Project>