[Feature] Add Bitter Regular font, remove Bitter Bold

[TimRoe]

Description of Change

Added Bitter-Regular.ttf (copy from flagship), deleted Bitter-Bold.ttf.

Testing

None, added AC to #495 to update the components package to reflect the changes.

PR Checklist

Code reviewer validation:

• General
  • PR is linked to ticket(s)
  • PR has changelog label applied if it's to be included in the changelog
  • Acceptance criteria:
    • All satisfied or
    • Documented reason for not being performed or
    • Split to separate ticket and ticket is linked by relevant AC(s)
  • Above PR sections adequately filled out
  • If any breaking changes, in accordance with the pre-1.0.0 versioning guidelines: a CU ticket has been created for the VA Mobile App detailing necessary adjustments with the package version that will be published by this ticket
• Code
  • Tests are included if appropriate (or split to separate ticket)
  • New functions have proper TSDoc annotations

Publish

If changes warrant a new version per the versioning guidelines and the PR is approved and ready to merge:

• Merge main into branch
• Merge branch to main
• Verify that Check Component Integrations workflow ran successfully
• Publish new version after merging