Dashboard contrast issues

[andrewgormley]

NetBox version

v4.1.0-dev

Feature type

Change to existing functionality

Proposed functionality

Fix contrast issues on the dashboard:

• (Dashboard) Module headers low contrast text [both, single]
• (Dashboard) Body copy low contrast on NetBox news [dark, single]

Use case

Improve ux for users with color vision deficiency

Database changes

No response

External dependencies

No response