Bump @xmldom/xmldom from 0.7.13 to 0.8.12

Bumps [@xmldom/xmldom](https://github.com/xmldom/xmldom) from 0.7.13 to 0.8.12.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](https://github.com/xmldom/xmldom/compare/0.7.13...0.8.12)

---
updated-dependencies:
- dependency-name: "@xmldom/xmldom"
  dependency-version: 0.8.12
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -46,7 +46,7 @@
     "@types/lodash": "4.14.171",
     "@types/mkdirp": "1.0.1",
     "@types/node-fetch": "2.6.13",
-    "@xmldom/xmldom": "0.7.13",
+    "@xmldom/xmldom": "0.8.12",
     "@xterm/addon-fit": "0.10.0",
     "@xterm/xterm": "5.5.0",
     "allotment": "1.20.2",