Bump version to 3.2.0

- Bump version to 3.2.0.
- Simplify the pre-release version labels to be more best practice.

Author: martincostello

Directory.Build.props

@@ -38,8 +38,8 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AssemblyVersion>3.0.0.0</AssemblyVersion>
-    <VersionPrefix>3.1.3</VersionPrefix>
-    <VersionSuffix Condition=" '$(VersionSuffix)' == '' AND '$(GITHUB_ACTIONS)' != '' ">beta$([System.Convert]::ToInt32(`$(GITHUB_RUN_NUMBER)`).ToString(`0000`))</VersionSuffix>
+    <VersionPrefix>3.2.0</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=" $(GITHUB_REF.StartsWith(`refs/tags/v`)) "></VersionSuffix>
     <FileVersion Condition=" '$(GITHUB_RUN_NUMBER)' != '' ">$(VersionPrefix).$(GITHUB_RUN_NUMBER)</FileVersion>