Bump version to 2.0.0

Bump version to 2.0.0 for switching to support .NET 8.

Author: martincostello

Directory.Build.props

@@ -33,8 +33,8 @@
     <RepositoryUrl>$(PackageProjectUrl).git</RepositoryUrl>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <VersionPrefix>1.1.1</VersionPrefix>
+    <AssemblyVersion>2.0.0.0</AssemblyVersion>
+    <VersionPrefix>2.0.0</VersionPrefix>
     <VersionSuffix Condition=" '$(VersionSuffix)' == '' AND '$(GITHUB_ACTIONS)' != '' AND '$(GITHUB_HEAD_REF)' != '' ">beta.$(GITHUB_RUN_NUMBER)</VersionSuffix>
     <VersionPrefix Condition=" $(GITHUB_REF.StartsWith(`refs/tags/v`)) ">$(GITHUB_REF.Replace('refs/tags/v', ''))</VersionPrefix>
     <VersionSuffix Condition=" $(GITHUB_REF.StartsWith(`refs/tags/v`)) "></VersionSuffix>