Update 1 NuGet dependencies

Author: github-actions[bot]

System.Device.Spi/System.Device.Spi.nfproj

@@ -56,9 +56,8 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=1.12.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.12.0-preview.9\lib\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.12.0-preview.18\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
-      <SpecificVersion>True</SpecificVersion>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.10.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.Runtime.Events.1.10.0-preview.8\lib\nanoFramework.Runtime.Events.dll</HintPath>

System.Device.Spi/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.9" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.18" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.8" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Device.Gpio" version="1.0.3-preview.14" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.4.244" developmentDependency="true" targetFramework="netnanoframework10" />

Test/SpiHardwareUnitTests/SpiHardwareUnitTests.nfproj

@@ -32,7 +32,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=1.12.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.12.0-preview.9\lib\mscorlib.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.12.0-preview.18\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.10.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

Test/SpiHardwareUnitTests/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.9" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.18" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.8" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Device.Gpio" version="1.0.3-preview.14" targetFramework="netnanoframework10" />
   <package id="nanoFramework.TestFramework" version="1.0.178" targetFramework="netnanoframework10" developmentDependency="true" />

nanoFramework.System.Device.Spi.nuspec

@@ -19,7 +19,7 @@
 This package requires a target with System.Device.Spi v$nativeVersion$ (checksum $checksum$).</description>
     <tags>nanoFramework C# csharp netmf netnf System.Device.Spi</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.9" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.18" />
       <dependency id="nanoFramework.Runtime.Events" version="1.10.0-preview.8" />
       <dependency id="nanoFramework.System.Device.Gpio" version="1.0.3-preview.14" />
     </dependencies>