update themes for #5980 and 733

package.default.json

@@ -66,10 +66,10 @@
     "nodebb-plugin-soundpack-default": "1.0.0",
     "nodebb-plugin-spam-be-gone": "0.5.1",
     "nodebb-rewards-essentials": "0.0.9",
-    "nodebb-theme-lavender": "4.1.1",
-    "nodebb-theme-persona": "6.1.8",
+    "nodebb-theme-lavender": "5.0.0",
+    "nodebb-theme-persona": "7.0.0",
     "nodebb-theme-slick": "1.1.1",
-    "nodebb-theme-vanilla": "7.1.6",
+    "nodebb-theme-vanilla": "8.0.0",
     "nodebb-widget-essentials": "3.0.7",
     "nodemailer": "4.3.0",
     "passport": "^0.4.0",