Bump xmldom and passport-saml

Removes [xmldom](https://github.com/xmldom/xmldom). It's no longer used after updating ancestor dependency [passport-saml](https://github.com/node-saml/passport-saml). These dependencies need to be updated together.


Removes `xmldom`

Updates `passport-saml` from 1.5.0 to 3.2.2
- [Release notes](https://github.com/node-saml/passport-saml/releases)
- [Changelog](https://github.com/node-saml/passport-saml/blob/master/CHANGELOG.md)
- [Commits](node-saml/passport-saml@v1.5.0...v3.2.2)

---
updated-dependencies:
- dependency-name: xmldom
  dependency-type: indirect
- dependency-name: passport-saml
  dependency-type: direct:production
...

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

package.json

@@ -56,7 +56,7 @@
     "passport-google-oauth20": "2.0.0",
     "passport-local": "^1.0.0",
     "passport-openidconnect": "0.0.2",
-    "passport-saml": "1.5.0",
+    "passport-saml": "3.2.4",
     "reflect-metadata": "0.1.13",
     "tslib": "1.11.2",
     "uuid": "8.3.2",