Increment version to 1.2.1

Release this minor update to 1.2 because of fix
included in 8f6eee2

Author: SkowronskiAndrew

UnityDataTool/UnityDataTool.csproj

@@ -4,10 +4,10 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latest</LangVersion>
-    <Version>1.2.0</Version>
-    <AssemblyVersion>1.2.0.0</AssemblyVersion>
-    <FileVersion>1.2.0.0</FileVersion>
-    <InformationalVersion>1.2.0</InformationalVersion>
+    <Version>1.2.1</Version>
+    <AssemblyVersion>1.2.1.0</AssemblyVersion>
+    <FileVersion>1.2.1.0</FileVersion>
+    <InformationalVersion>1.2.1</InformationalVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">