Bump @xmldom/xmldom from 0.8.12 to 0.8.13 in /Extension (#14403)

Bumps [@xmldom/xmldom](https://github.com/xmldom/xmldom) from 0.8.12 to 0.8.13.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.8.12...0.8.13)

---
updated-dependencies:
- dependency-name: "@xmldom/xmldom"
  dependency-version: 0.8.13
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sean McManus <seanmcm@microsoft.com>

Author: dependabot[bot]

Extension/yarn.lock

@@ -1310,9 +1310,9 @@
   integrity sha1-Ml20I5XNSf5sFAV/mpAOQn34gQ4=
 
 "@xmldom/xmldom@^0.8.8":
-  version "0.8.12"
-  resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/@xmldom/xmldom/-/xmldom-0.8.12.tgz#cf488a5435fa06c7374ad1449c69cea0f823624b"
-  integrity sha1-z0iKVDX6Bsc3StFEnGnOoPgjYks=
+  version "0.8.13"
+  resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/@xmldom/xmldom/-/xmldom-0.8.13.tgz#00d1dd940b218dff2e49309d410d8bb212159225"
+  integrity sha1-ANHdlAshjf8uSTCdQQ2LshIVkiU=
 
 "@xtuc/ieee754@^1.2.0":
   version "1.2.0"