Bump System.Text.Encodings.Web from 4.6.0 to 4.7.2 in /CDP4WebServer.IIS (#250)

Bumps [System.Text.Encodings.Web](https://github.com/dotnet/corefx) from 4.6.0 to 4.7.2.
- [Release notes](https://github.com/dotnet/corefx/releases)
- [Commits](https://github.com/dotnet/corefx/commits)

---
updated-dependencies:
- dependency-name: System.Text.Encodings.Web
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

CDP4WebServer.IIS/packages.config

@@ -27,7 +27,7 @@
   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net472" />
   <package id="System.Resources.Extensions" version="4.6.0" targetFramework="net472" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.6.0" targetFramework="net472" />
-  <package id="System.Text.Encodings.Web" version="4.6.0" targetFramework="net472" />
+  <package id="System.Text.Encodings.Web" version="4.7.2" targetFramework="net472" />
   <package id="System.Text.Json" version="4.6.0" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.3" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />