Bump bootstrap from 4.6.0 to 5.1.3

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.6.0 to 5.1.3.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v4.6.0...v5.1.3)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
     "@testing-library/react": "^11.1.2",
     "@testing-library/user-event": "^12.2.2",
     "axios": "^0.21.4",
-    "bootstrap": "^4.6.0",
+    "bootstrap": "^5.1.3",
     "dayjs": "^1.10.7",
     "firebase": "^9.1.0",
     "gh-pages": "^3.2.3",