Lock the iframe-resizer version to exactly version 4.4.2.

When I updated dependencies the `package-lock.json` file switched to
version 4.4.5 of `iframe-resizer` which has console warnings. This was
unintentional.  So specify exactlay version 4.4.2 without the prefix of
`^` to lock the version.

Author: drgrice1

htdocs/package-lock.json

@@ -17,7 +17,7 @@
 		"@openwebwork/pg-codemirror-editor": "^0.0.10",
 		"bootstrap": "^5.3.8",
 		"flatpickr": "^4.6.13",
-		"iframe-resizer": "^4.4.2",
+		"iframe-resizer": "4.4.2",
 		"jquery": "^4.0.0",
 		"jquery-ui-dist": "^1.13.3",
 		"luxon": "^3.7.2",