Update CoreClr, CoreFx to preview-27219-04, preview.18619.1, respecti…

…vely (#4883)

dependencies.props

@@ -9,17 +9,17 @@
        These ref versions are pulled from https://github.com/dotnet/versions.
   -->
   <PropertyGroup>
-    <CoreFxCurrentRef>dce4f9f89234797017b940a898a9af381132d33c</CoreFxCurrentRef>
-    <CoreClrCurrentRef>56b60e4ef0879b0423542f32a0b87779b4236453</CoreClrCurrentRef>
+    <CoreFxCurrentRef>bf2f112caac2b0ae34440ecbdf2467dd2813176f</CoreFxCurrentRef>
+    <CoreClrCurrentRef>bf2f112caac2b0ae34440ecbdf2467dd2813176f</CoreClrCurrentRef>
     <StandardCurrentRef>9beae4222a58a355e2107e99bdbcb8902c232c18</StandardCurrentRef>
     <BuildToolsCurrentRef>5f8acf1c140f742304e6d85cde307bf31f094104</BuildToolsCurrentRef>
   </PropertyGroup>
 
   <PropertyGroup>
-    <MicrosoftNETCorePlatformsPackageVersion>3.0.0-preview.18618.9</MicrosoftNETCorePlatformsPackageVersion>
+    <MicrosoftNETCorePlatformsPackageVersion>3.0.0-preview.18619.1</MicrosoftNETCorePlatformsPackageVersion>
     <MicrosoftNETCoreTargetsPackageVersion>2.0.0</MicrosoftNETCoreTargetsPackageVersion>
-    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.6.0-preview.18618.9</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
-    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>3.0.0-preview-27218-02</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
+    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.6.0-preview.18619.1</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
+    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>3.0.0-preview-27219-04</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
     <NETStandardLibraryPackageVersion>2.0.3</NETStandardLibraryPackageVersion>
     <MicrosoftDiaSymReaderNativePackageVersion>1.7.0</MicrosoftDiaSymReaderNativePackageVersion>
     <MicrosoftTargetingPackPrivateWinRTPackageVersion>1.0.5</MicrosoftTargetingPackPrivateWinRTPackageVersion>