ui: Reland upgrade mithril

Change-Id: I6bcc0b2b967ec0f2d244d10a13e52afd7776f5c9
diff --git a/ui/package-lock.json b/ui/package-lock.json
index e99d223..5c47b71 100644
--- a/ui/package-lock.json
+++ b/ui/package-lock.json
@@ -4128,9 +4128,9 @@
       }
     },
     "mithril": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/mithril/-/mithril-1.1.7.tgz",
-      "integrity": "sha512-1SAkGeVrIVvkUHlPHvR3pXdWzNfTzmS/fBAe+rC2ApEBfZFFc+idi8Qg/M5JoW/sZkIDXSfQYVgvENMIhBIVAg=="
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/mithril/-/mithril-2.0.4.tgz",
+      "integrity": "sha512-mgw+DMZlhMS4PpprF6dl7ZoeZq5GGcAuWnrg5e12MvaGauc4jzWsDZtVGRCktsiQczOEUr2K5teKbE5k44RlOg=="
     },
     "mixin-deep": {
       "version": "1.3.2",