Add undeclared dependency md5

This is used directly in webpack/helpers.ts. It is a transitive de-
pendency of orejime but we are using it directly in our code so we
should declare it.

Author: alanorth

package-lock.json

@@ -223,6 +223,7 @@
     "karma-jasmine": "~4.0.0",
     "karma-jasmine-html-reporter": "^1.5.0",
     "karma-mocha-reporter": "2.2.5",
+    "md5": "^2.3.0",
     "ng-mocks": "^14.13.5",
     "ngx-mask": "14.2.4",
     "postcss": "^8.5",