Bump @xmldom/xmldom from 0.9.8 to 0.9.9

Bumps [@xmldom/xmldom](https://github.com/xmldom/xmldom) from 0.9.8 to 0.9.9.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.9.8...0.9.9)

---
updated-dependencies:
- dependency-name: "@xmldom/xmldom"
  dependency-version: 0.9.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -14,7 +14,7 @@
 	"dependencies": {
 		"@fancyapps/fancybox": "3.5.7",
 		"@khanacademy/tota11y": "0.2.0",
-		"@xmldom/xmldom": "^0.9.8",
+		"@xmldom/xmldom": "^0.9.9",
 		"alpaca": "1.5.27",
 		"blob.js": "1.0.1",
 		"bluebird": "3.7.2",

yarn.lock

@@ -622,10 +622,10 @@
     "@types/expect" "^1.20.4"
     "@types/node" "*"
 
-"@xmldom/xmldom@^0.9.8":
-  version "0.9.8"
-  resolved "https://registry.yarnpkg.com/@xmldom/xmldom/-/xmldom-0.9.8.tgz#1471e82bdff9e8f20ee8bbe60d4ffa8a516e78d8"
-  integrity sha512-p96FSY54r+WJ50FIOsCOjyj/wavs8921hG5+kVMmZgKcvIKxMXHTrjNJvRgWa/zuX3B6t2lijLNFaOyuxUH+2A==
+"@xmldom/xmldom@^0.9.9":
+  version "0.9.9"
+  resolved "https://registry.yarnpkg.com/@xmldom/xmldom/-/xmldom-0.9.9.tgz#665b1cf4e5962d248bb4d032b5e020626f634503"
+  integrity sha512-qycIHAucxy/LXAYIjmLmtQ8q9GPnMbnjG1KXhWm9o5sCr6pOYDATkMPiTNa6/v8eELyqOQ2FsEqeoFYmgv/gJg==
 
 "@yeoman/adapter@^4.0.2":
   version "4.0.2"