[Snyk] Upgrade bootstrap from 4.3.1 to 4.4.1

[snyk-bot]

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

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 2 versions ahead of your current version.
• The recommended version was released 14 days ago, on 2019-11-28.

Release notes

Package name: bootstrap

• 4.4.1 - 2019-11-28
  
  • Fix Dart Sass compatibility (#29755, #29763)
  • Add :disabled for disabled fieldset (#29762)
• 4.4.0 - 2019-11-26
  

  Highlights

  Here's what you need to know about v4.4.0. Remember that with every minor and major release of Bootstrap, we ship a new URL for our hosted docs to ensure URLs continue to work.- New responsive containers! Over a year in the making, fluid up to a particular breakpoint, available for all responsive tiers.

  • New responsive .row-cols classes for quickly specifying the number of columns across breakpoints. This one is huge for those of you who have asked for responsive card decks.
  • New escape-svg() function for simplifying our embedded background-image SVGs for forms and more.
  • New add() and subtract() functions for avoiding errors and zero values from CSS's built in calc feature.
  • New make-col-auto() mixin to make our .col-auto class available with custom HTML.
  • Fixed an issue with Microsoft Edge not picking up :disabled styles by moving selectors to [disabled].
  • Deprecated: bg-variant(), nav-divider(), and form-control-focus() mixins are now deprecated as they're going away in v5.
  • Updated our spacing and alignment for modal footer elements like buttons to automatically wrap when space is constrained.
  • More flexible form control validation styles thanks to fewer chained selectors. Also updated the :invalid validation icon to be an alert instead of an × to avoid confusion with browser functionality for clearing the form field value.
  • Fixed a couple dozen CSS and JS bugs.
  • Moved to GitHub Actions for CI/CD! Expect more updates to our CI setup over time here while Actions evolves.
  • Updated documentation to fix links and typos, improved landmarks for secondary navigation, and a new security doc for guidelines on reporting potential vulnerabilities.

  Links

  • List of closed issues and merged pull requests
  • Review the project board
• 4.3.1 - 2019-02-13
  
  • Security: Fixed an XSS vulnerability (CVE-2019-8331) in our tooltip and popover plugins by implementing a new HTML sanitizer
  • Fixed a small issue with our RFS (responsive font sizes) mixins

from bootstrap GitHub release notes

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[Asthriona]

Should be good now.