Update prosemirror dependencies

Fixes: #931
Fixes: #2276
Fixes: #2480

Thanks a lot to Ferdinand Thiessen for bug triaging and fixing <3

Signed-off-by: Jonas <jonas@freesources.org>

package.json

@@ -82,14 +82,14 @@
 		"path-normalize": "^6.0.6",
 		"prosemirror-collab": "^1.3.0",
 		"prosemirror-inputrules": "^1.2.0",
-		"prosemirror-markdown": "^1.9.1",
+		"prosemirror-markdown": "^1.9.3",
 		"prosemirror-model": "^1.18.1",
 		"prosemirror-schema-list": "^1.2.0",
 		"prosemirror-state": "^1.4.0",
 		"prosemirror-tables-contently": "^1.1.2",
 		"prosemirror-transform": "^1.6.0",
 		"prosemirror-utils": "^1.0.0-0",
-		"prosemirror-view": "^1.26.3",
+		"prosemirror-view": "^1.26.4",
 		"proxy-polyfill": "^0.3.2",
 		"tippy.js": "^6.3.7",
 		"vue": "^2.6.14",