Bump Steeltoe version from 4.2.0 to 4.2.1. (#1706)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

shared-package.props

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <VersionPrefix>4.2.0</VersionPrefix>
+    <VersionPrefix>4.2.1</VersionPrefix>
     <VersionSuffix>pre</VersionSuffix>
     <Authors>Broadcom</Authors>
     <PackageIcon>PackageIcon.png</PackageIcon>