MAJOR: Bumped up DotNet connector MAJOR version from 3.1.0 to 4.0.0 (#990)

### Description
MAJOR: Bumped up DotNet connector MAJOR version from 3.1.0 to 4.0.0

### Checklist
- [ ] Code compiles correctly
- [ ] Code is formatted according to [Coding
Conventions](../blob/master/CodingConventions.md)
- [ ] Created tests which fail without the change (if possible)
- [ ] All tests passing (`dotnet test`)
- [ ] Extended the README / documentation, if necessary
- [ ] Provide JIRA issue id (if possible) or GitHub issue id in PR name

Author: sfc-gh-knozderko

Snowflake.Data/Snowflake.Data.csproj

@@ -11,7 +11,7 @@
     <Company>Snowflake Computing, Inc</Company>
     <Product>Snowflake Connector for .NET</Product>
     <Authors>Snowflake</Authors>
-    <Version>3.1.0</Version>
+    <Version>4.0.0</Version>
     <DebugType>Full</DebugType>
     <LangVersion>7.3</LangVersion>
   </PropertyGroup>