fix(l10n): translated using Weblate (Dutch)

Currently translated at 54.5% (66 of 121 strings)

Translation: ubuntu-desktop-translations/Ubuntu Flutter Plugins
Translate-URL: https://hosted.weblate.org/projects/ubuntu-desktop-translations/ubuntu-flutter-plugins/nl/

Author: Stephan-P

packages/ubuntu_localizations/lib/src/l10n/ubuntu_nl.arb

@@ -113,5 +113,23 @@
   "indexLabel": "Index",
   "@indexLabel": {},
   "informationLabel": "Informatie",
-  "@informationLabel": {}
+  "@informationLabel": {},
+  "insertLabel": "Invoegen",
+  "@insertLabel": {},
+  "italicLabel": "Cursief",
+  "@italicLabel": {},
+  "lastLabel": "Laatste",
+  "@lastLabel": {},
+  "leaveLabel": "Verlaten",
+  "@leaveLabel": {},
+  "mediaLabel": "Media",
+  "@mediaLabel": {},
+  "networkLabel": "Netwerl",
+  "@networkLabel": {},
+  "newLabel": "Nieuw",
+  "@newLabel": {},
+  "leftLabel": "Links",
+  "@leftLabel": {},
+  "landscapeLabel": "Liggend",
+  "@landscapeLabel": {}
 }