Bump @xmldom/xmldom from 0.8.8 to 0.8.9

Bumps [@xmldom/xmldom](https://github.com/xmldom/xmldom) from 0.8.8 to 0.8.9.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.8.8...0.8.9)

---
updated-dependencies:
- dependency-name: "@xmldom/xmldom"
  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": "^0.8.8",
+		"@xmldom/xmldom": "^0.8.9",
 		"alpaca": "1.5.27",
 		"blob.js": "1.0.1",
 		"bluebird": "3.7.2",

yarn.lock

@@ -509,10 +509,10 @@
   dependencies:
     "@types/node" "*"
 
-"@xmldom/xmldom@^0.8.8":
-  version "0.8.8"
-  resolved "https://registry.yarnpkg.com/@xmldom/xmldom/-/xmldom-0.8.8.tgz#d0d11511cbc1de77e53342ad1546a4d487d6ea72"
-  integrity sha512-0LNz4EY8B/8xXY86wMrQ4tz6zEHZv9ehFMJPm8u2gq5lQ71cfRKdaKyxfJAx5aUoyzx0qzgURblTisPGgz3d+Q==
+"@xmldom/xmldom@^0.8.9":
+  version "0.8.9"
+  resolved "https://registry.yarnpkg.com/@xmldom/xmldom/-/xmldom-0.8.9.tgz#b6ef7457e826be8049667ae673eda7876eb049be"
+  integrity sha512-4VSbbcMoxc4KLjb1gs96SRmi7w4h1SF+fCoiK0XaQX62buCc1G5d0DC5bJ9xJBNPDSVCmIrcl8BiYxzjrqaaJA==
 
 abbrev@1, abbrev@^1.0.0:
   version "1.1.1"