Bump bootstrap from 4.5.1 to 4.5.2 in /frontend

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.5.1 to 4.5.2.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](https://github.com/twbs/bootstrap/compare/v4.5.1...v4.5.2)

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

frontend/package.json

@@ -25,7 +25,7 @@
     "dependencies": {
         "@fortawesome/fontawesome-free": "^5.14.0",
         "@popperjs/core": "^2.4.4",
-        "bootstrap": "^4.5.1",
+        "bootstrap": "^4.5.2",
         "chart.js": "^2.9.3",
         "icheck-bootstrap": "^3.0.1",
         "jquery": "^3.5.1",