Updated ApexParser reference in the Playground project.

Author: yallie

Playground/Playground.csproj

@@ -37,7 +37,7 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="ApexParser, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\ApexParser.0.6.14\lib\netstandard2.0\ApexParser.dll</HintPath>
+      <HintPath>..\packages\ApexParser.0.6.15\lib\netstandard2.0\ApexParser.dll</HintPath>
     </Reference>
     <Reference Include="FastColoredTextBox, Version=2.16.21.0, Culture=neutral, PublicKeyToken=fb8aa12b994ef61b, processorArchitecture=MSIL">
       <HintPath>..\packages\FCTB.2.16.21.0\lib\FastColoredTextBox.dll</HintPath>

Playground/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="ApexParser" version="0.6.14" targetFramework="net461" />
+  <package id="ApexParser" version="0.6.15" targetFramework="net461" />
   <package id="FCTB" version="2.16.21.0" targetFramework="net462" />
   <package id="Microsoft.CodeAnalysis.Analyzers" version="2.6.2" targetFramework="net461" developmentDependency="true" />
   <package id="Microsoft.CodeAnalysis.Common" version="2.9.0" targetFramework="net461" />