Prepare 9.2.0 release

[aduth]

9.2.0

Improvements

• Update styling for Alert component for increased contrast and consistency with U.S. Web Design System. (#439)
• Update styling for Validation component icons for consistency with U.S. Web Design System. (#441)
• Update markup for badge component to use U.S. Web Design System icons. (#442)
  • Existing usage will not be affected until the next major release (see "Deprecations").

Deprecations

• Badge component markup has been updated and will be required in the next major release. (#442)
• Custom alert icons will be removed in the next major release, use U.S. Web Design System alerts instead.
  • alerts/error.svg
  • alerts/info.svg
  • alerts/success.svg
  • alerts/unphishable.svg
  • alerts/warning.svg