Bump dependencies

[compulim]

Fixes #4121. Fixes #4183.

Changelog Entry

Changed

• Bumped all dependencies to the latest versions, by @compulim in PR #4074 and PR #4123
  • Production dependencies
    • botframework-directlinejs@0.15.1
    • markdown-it@12.3.2
  • Development dependencies
    • botbuilder@4.15.0
    • jest-junit@13.0.0
    • node-dev@7.1.0
    • node-fetch@2.6.7
    • react-scripts@5.0.0
    • restify@8.6.0
    • serve@13.0.2

Description

Update some dependencies to latest versions.

Also updated samples/**/README.md to use less suspicious bogus secrets.

Specific Changes

• On every folder with package.json, run npm audit fix
• Updated to react-scripts@5.0.0
• Updated to serve@13.0.2
• Updated samples/**/README.md to use less suspicious bogus secrets

• I have added tests and executed them locally
• I have updated CHANGELOG.md
• I have updated documentation

Review Checklist

This section is for contributors to review your work.

• Accessibility reviewed (tab order, content readability, alt text, color contrast)
• Browser and platform compatibilities reviewed
• CSS styles reviewed (minimal rules, no z-index)
• Documents reviewed (docs, samples, live demo)
• Internationalization reviewed (strings, unit formatting)
• package.json and package-lock.json reviewed
• Security reviewed (no data URIs, check for nonce leak)
• Tests reviewed (coverage, legitimacy)