Updated npm dependencies

This includes Bootstrap and JSHint. Ensured site continued to render as expected given the update to Bootstrap. (No issues were expected given that it's a minor patch—and none were found.)

Author: JeremyCaney

OnTopic.Editor.AspNetCore/package-lock.json

@@ -7,7 +7,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "bootstrap": "^4.5.0",
+    "bootstrap": "^4.5.2",
     "cssnano": "^4.1.10",
     "gulp": "^4.0.2",
     "gulp-concat": "^2.6.1",
@@ -23,7 +23,7 @@
     "jquery-ui-timepicker-addon": "^1.6.3",
     "jquery-validation": "^1.19.2",
     "jquery.are-you-sure": "^1.9.0",
-    "jshint": "^2.11.1",
+    "jshint": "^2.12.0",
     "merge2": "^1.4.1",
     "popper.js": "^1.16.1"
   }