chore: bump up to 0.5.1

Directory.Build.props

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <!-- NuGet Packaging -->
-        <PackageVersion>0.5.0</PackageVersion>
+        <PackageVersion>0.5.1</PackageVersion>
         <Authors>nuskey;Akeit0</Authors>
         <Copyright>© Yusuke Nakada</Copyright>
         <PackageProjectUrl>https://github.com/nuskey8/Lua-CSharp</PackageProjectUrl>

src/Lua.Unity/Assets/Lua.Unity/package.json

@@ -1,6 +1,6 @@
 {
     "name": "com.nuskey8.lua.unity",
-    "version": "0.5.0",
+    "version": "0.5.1",
     "displayName": "Lua.Unity",
     "description": "Lua-CSharp extension for Unity",
     "author": {