Bump dompurify from 2.2.2 to 2.2.8

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.2.2 to 2.2.8.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.2.2...2.2.8)

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

package-lock.json

@@ -3366,9 +3366,9 @@
       }
     },
     "dompurify": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-2.2.2.tgz",
-      "integrity": "sha512-BsGR4nDLaC5CNBnyT5I+d5pOeaoWvgVeg6Gq/aqmKYWMPR07131u60I80BvExLAJ0FQEIBQ1BTicw+C5+jOyrg=="
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-2.2.8.tgz",
+      "integrity": "sha512-9H0UL59EkDLgY3dUFjLV6IEUaHm5qp3mxSqWw7Yyx4Zhk2Jn2cmLe+CNPP3xy13zl8Bqg+0NehQzkdMoVhGRww=="
     },
     "duplexify": {
       "version": "3.7.1",

package.json

@@ -50,7 +50,7 @@
     "css-vars-ponyfill": "^2.3.2",
     "davclient.js": "git+https://github.com/owncloud/davclient.js.git#0.2.1",
     "debounce": "^1.2.0",
-    "dompurify": "^2.2.2",
+    "dompurify": "^2.2.8",
     "escape-html": "^1.0.3",
     "handlebars": "^4.7.7",
     "jcrop": "git+https://github.com/ChristophWurst/Jcrop.git#v0.9.12-npm3",