Bump dompurify from 2.2.3 to 2.2.6

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.2.3 to 2.2.6.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.2.3...2.2.6)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: npmbuildbot-nextcloud[bot] <npmbuildbot-nextcloud[bot]@users.noreply.github.com>

package-lock.json

@@ -4191,9 +4191,9 @@
       }
     },
     "dompurify": {
-      "version": "2.2.3",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-2.2.3.tgz",
-      "integrity": "sha512-8Hv7Q0FuwD9rWoB6qI2eZsfKbGXfoUVuGHHrE15vgk4ReOKwOkSgbqb2OMFtc0d5besOEkoLkcyuV10zQ2X5gw=="
+      "version": "2.2.6",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-2.2.6.tgz",
+      "integrity": "sha512-7b7ZArhhH0SP6W2R9cqK6RjaU82FZ2UPM7RO8qN1b1wyvC/NY1FNWcX1Pu00fFOAnzEORtwXe4bPaClg6pUybQ=="
     },
     "duplexify": {
       "version": "3.7.1",

package.json

@@ -51,7 +51,7 @@
     "css-vars-ponyfill": "^2.4.2",
     "davclient.js": "git+https://github.com/owncloud/davclient.js.git#0.2.1",
     "debounce": "^1.2.0",
-    "dompurify": "^2.2.3",
+    "dompurify": "^2.2.6",
     "escape-html": "^1.0.3",
     "handlebars": "^4.7.6",
     "jcrop": "git+https://github.com/ChristophWurst/Jcrop.git#v0.9.12-npm3",