[rel/17.6] Update version to 17.6.3 (#4555)

Author: nohwnd

eng/Versions.props

@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <!-- This repo version -->
-    <VersionPrefix>17.6.2</VersionPrefix>
+    <VersionPrefix>17.6.3</VersionPrefix>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
     <!-- Opt-out repo features -->
     <UsingToolXliff>false</UsingToolXliff>

scripts/build/TestPlatform.Dependencies.props

@@ -12,7 +12,7 @@
     and because during the test `dotnet test` will run and re-build some of the test projects and at that time the version
     from a build parameter would not be available, so I am writing this version from the build.ps1 script to keep it in sync -->
 		<!-- Note that before bumping this version, you need to have one NuGet package available -->
-    <NETTestSdkVersion>17.6.2-dev</NETTestSdkVersion>
+    <NETTestSdkVersion>17.6.3-dev</NETTestSdkVersion>
 
     <!-- These versions are used for running unit tests, and running acceptance tests. They are also used as the default version for projects
     in TestAssets.sln to allow running and debugging tests in that solution directly in VS without having to run them via AcceptanceTests. -->

scripts/build/TestPlatform.Settings.targets

@@ -5,7 +5,7 @@
     <!-- This version is read by vsts-prebuild.ps1 and is a base for the current version, this should be updated
     at the start of new iteration to the goal number. This is also used to version the local packages. This version needs to be statically
     readable when we read the file as xml, don't move it to a .props file, unless you change the build server process -->
-    <TPVersionPrefix>17.6.2</TPVersionPrefix>
+    <TPVersionPrefix>17.6.3</TPVersionPrefix>
     <LangVersion>preview</LangVersion>
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
     <AnalysisLevel>preview</AnalysisLevel>