Bump bootstrap from 4.5.2 to 4.6.0

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.5.2 to 4.6.0.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v4.5.2...v4.6.0)

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

package.json

@@ -25,7 +25,7 @@
     "@fortawesome/free-solid-svg-icons": "^5.14.0",
     "@fortawesome/react-fontawesome": "^0.1.11",
     "@zeit/next-css": "^1.0.1",
-    "bootstrap": "^4.5.2",
+    "bootstrap": "^4.6.0",
     "jquery": "^3.5.1",
     "minimist": "^1.2.5",
     "next": "^9.5.3",