Prepare for BS5 migration.

Convert build script to use npm rather than webjars.

Author: uhafner

.github/dependabot.yml

@@ -35,3 +35,8 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"