Bump bootstrap from 4.5.3 to 4.6.0

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.5.3 to 4.6.0.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](https://github.com/twbs/bootstrap/compare/v4.5.3...v4.6.0)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -4,7 +4,7 @@
   "description": "My website",
   "main": "index.js",
   "dependencies": {
-    "bootstrap": "^4.5.3",
+    "bootstrap": "^4.6.0",
     "jquery": "^3.5.0",
     "js-yaml": "4.0.0",
     "popper.js": "^1.16.1"