fix: upgrade bootstrap from 4.3.1 to 4.4.1

Snyk has created this PR to upgrade bootstrap from 4.3.1 to 4.4.1.

See this package in NPM:
https://www.npmjs.com/package/bootstrap

See this project in Snyk:
https://app.snyk.io/org/luisalejandro/project/709c2db5-08fb-4d5f-88a4-53be6eecb157?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -64,7 +64,7 @@
     "babel-plugin-transform-runtime": "6.23.0",
     "babel-preset-es2015": "6.24.1",
     "babelify": "8.0.0",
-    "bootstrap": "4.3.1",
+    "bootstrap": "4.4.1",
     "browser-sync": "2.26.7",
     "browserify": "16.5.1",
     "browserify-shim": "3.8.14",