Upgrade MSBuild refs to 14.3.0 (#14865)

NuGet.Config

@@ -28,7 +28,6 @@
     <add key="dotnet.myget.org roslyn-master-nightly" value="https://dotnet.myget.org/F/roslyn-master-nightly/api/v3/index.json" />
     <add key="dotnet.myget.org devcore" value="https://www.myget.org/F/vs-devcore/api/v3/index.json" />
     <add key="dotnet.myget.org roslyn-tools" value = "https://dotnet.myget.org/F/roslyn-tools/api/v3/index.json" />
-    <add key="dotnet.myget.org msbuild" value="https://dotnet.myget.org/F/msbuild/api/v3/index.json" />
     <add key="myget.org vs-editor" value="https://myget.org/F/vs-editor/api/v3/index.json" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
   </packageSources>

build/MSBuildToolset/project.json

@@ -5,8 +5,8 @@
     "outputName": "RoslynRestore"
   },
   "dependencies": {
-    "Microsoft.Build": "14.3.0-prerelease01",
-    "Microsoft.Build.Tasks.Core": "14.3.0-prerelease01",
+    "Microsoft.Build": "14.3.0",
+    "Microsoft.Build.Tasks.Core": "14.3.0",
     "Microsoft.NETCore.TestHost": "1.0.0",
     "Microsoft.NETCore.App": "1.0.0-rc3-004338",
     "Newtonsoft.Json": "8.0.3"

build/Targets/Dependencies.props

@@ -3,8 +3,8 @@
   <!--Generated file, do not directly edit.  Run "RepoUtil change" to regenerate-->
   <PropertyGroup>
     <ManagedEsentVersion>1.9.4</ManagedEsentVersion>
-    <MicrosoftBuildVersion>14.3.0-prerelease01</MicrosoftBuildVersion>
-    <MicrosoftBuildTasksCoreVersion>14.3.0-prerelease01</MicrosoftBuildTasksCoreVersion>
+    <MicrosoftBuildVersion>14.3.0</MicrosoftBuildVersion>
+    <MicrosoftBuildTasksCoreVersion>14.3.0</MicrosoftBuildTasksCoreVersion>
     <MicrosoftCodeAnalysisAnalyzersVersion>1.1.0</MicrosoftCodeAnalysisAnalyzersVersion>
     <MicrosoftCompositionVersion>1.0.27</MicrosoftCompositionVersion>
     <MicrosoftDiagnosticsRuntimeVersion>0.8.31-beta</MicrosoftDiagnosticsRuntimeVersion>

src/Compilers/Core/MSBuildTask/project.json

 {
     "dependencies": {
-        "Microsoft.Build": "14.3.0-prerelease01",
-        "Microsoft.Build.Tasks.Core": "14.3.0-prerelease01",
+        "Microsoft.Build": "14.3.0",
+        "Microsoft.Build.Tasks.Core": "14.3.0",
         "Microsoft.NETCore.Platforms": "1.0.1",
         "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
         "Microsoft.Win32.Primitives": "4.0.1",

src/Tools/BuildUtil/BuildUtil/project.json

@@ -4,8 +4,8 @@
     "dnxcore50.app": {}
   },
   "dependencies": {
-    "Microsoft.Build": "14.3.0-prerelease01",
-    "Microsoft.Build.Tasks.Core": "14.3.0-prerelease01",
+    "Microsoft.Build": "14.3.0",
+    "Microsoft.Build.Tasks.Core": "14.3.0",
     "Microsoft.NETCore": "5.0.0",
     "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
     "NuSpec.ReferenceGenerator": "1.4.2",