[master] Update dependencies from dotnet/iot (#611)

* Update dependencies from https://github.com/dotnet/iot build 20190719.3

- Iot.Device.Bindings - 0.1.0-prerelease.19369.3
- System.Device.Gpio - 0.1.0-prerelease.19369.3

* Update dependencies from https://github.com/dotnet/iot build 20190721.1

- Iot.Device.Bindings - 0.1.0-prerelease.19371.1
- System.Device.Gpio - 0.1.0-prerelease.19371.1

eng/Version.Details.xml

 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19368.2">
+    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19371.1">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>0c9ddb876c1cf73c34e19c6bf1820be4fe27588f</Sha>
+      <Sha>322de72eba1964a8e429973acf6132f0559bcd1d</Sha>
     </Dependency>
-    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19368.2">
+    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19371.1">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>0c9ddb876c1cf73c34e19c6bf1820be4fe27588f</Sha>
+      <Sha>322de72eba1964a8e429973acf6132f0559bcd1d</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -3,8 +3,8 @@
   <PropertyGroup>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
     <!-- dotnet/iot dependencies -->
-    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19368.2</SystemDeviceGpioPackageVersion>
-    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19368.2</IotDeviceBindingsPackageVersion>
+    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19371.1</SystemDeviceGpioPackageVersion>
+    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19371.1</IotDeviceBindingsPackageVersion>
     <!-- dotnet/arcade dependencies -->
     <MicrosoftDotNetGenAPIPackageVersion>1.0.0-beta.19369.2</MicrosoftDotNetGenAPIPackageVersion>
   </PropertyGroup>