Bump bootstrap from 3.3.7 to 3.4.1

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 3.3.7 to 3.4.1.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v3.3.7...v3.4.1)

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

Author: dependabot[bot]

package-lock.json

@@ -9,7 +9,7 @@
     "DatePicker": "^2.0.0",
     "axios": "^0.19.2",
     "body-parser": "^1.19.0",
-    "bootstrap": "3.3.7",
+    "bootstrap": "3.4.1",
     "chartist": "0.10.1",
     "cors": "^2.8.5",
     "esm": "^3.2.25",