v30.4.0

• Added eql glyph in EuiIcon (#4110)
• Added testenv mock for htmlIdGenerator (#4212)
• Added several Sass mixins for handling of unified focus/hover states (#4242)
• Exported useDataGridColumnSelector, useDataGridColumnSorting, and useDataGridStyleSelector hooks (#4271)

Theme: Amsterdam

• Unify focus states by leaning into outline and restricting to keyboard navigation (#4242)
• Removed faux border from EuiAvatar (#4255)
• Changed the color and font-weight of inline code block (#4272)