Update 2 NuGet dependencies

Author: github-actions[bot]

source/TestFramework/nanoFramework.TestFramework.nfproj

@@ -39,8 +39,8 @@
     <None Include="key.snk" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.11.7.2, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.11.7\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.12.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.12.0-preview.1\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>

source/TestFramework/packages.config

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.11.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.1" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.4.255" developmentDependency="true" targetFramework="netnanoframework10" />
 </packages>

source/UnitTestLauncher/nanoFramework.UnitTestLauncher.nfproj

@@ -38,8 +38,8 @@
     <None Include="key.snk" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.11.7.2, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.11.7\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.12.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.12.0-preview.1\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>

source/UnitTestLauncher/packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.11.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.1" targetFramework="netnanoframework10" />
 </packages>