Bump @primer/react from 38.7.0 to 38.20.0

[dependabot]

Bumps @primer/react from 38.7.0 to 38.20.0.

Release notes

Sourced from @​primer/react's releases.

@​primer/react@​38.20.0

Minor Changes

• #7723 ec6c88f Thanks @​liuliu-dev! - Add Card component with subcomponents: Card.Icon, Card.Image, Card.Heading, Card.Description, Card.Menu, and Card.Metadata

• #7725 d7b9313 Thanks @​TylerJDev! - AnchoredOverlay: Remove polyfill for CSS Anchor Positioning, use primer/behaviors as fallback. Ensure overlays take available space.

• #7752 d7380a7 Thanks @​liuliu-dev! - Breadcrumbs: Graduate primer_react_breadcrumbs_overflow_menu feature flag, making the overflow menu behavior always-on.

• #7733 b9211db Thanks @​francinelucca! - Overlay: Graduate primer_react_overlay_max_height_clamp_to_viewport feature flag

  The max-height of overlays is now clamped to the viewport height by default using min(size, 100dvh). This prevents overlays from extending beyond the viewport on smaller screens.

• #7698 5c34ab4 Thanks @​hectahertz! - Timeline: add variant prop to Timeline.Badge for built-in color schemes (accent, success, attention, severe, danger, done, open, closed, sponsors)

Patch Changes

• #7738 f5f2869 Thanks @​francinelucca! - ActionMenu, Table: Fix component mutation issue where Object.assign was modifying original @primer/react components. Now uses wrapper components to avoid side effects.

• #7747 b7dfb78 Thanks @​copilot-swe-agent! - Fix IssueLabelToken text contrast in light theme by updating the lightness-switch formula to use a division-based approach that properly produces a binary switch value for selecting black vs white text

• #7739 efa7af8 Thanks @​copilot-swe-agent! - Spinner: Remove feature flag primer_react_spinner_synchronize_animations, treat it as always enabled.

• #7746 30206c4 Thanks @​jonrohan! - Update TokenTextContainer line-height to use primer primitives CSS variable var(--base-text-lineHeight-normal)

@​primer/react@​38.19.0

Minor Changes

• #7677 c1a81b1 Thanks @​TylerJDev! - AnchoredOverlay: Add Popover API to AnchoredOverlay (behind primer_react_css_anchor_positioning feature flag)

• #7697 990ce7b Thanks @​hectahertz! - Stack: Add tight (4px) and cozy (12px) spacing values to gap and padding props. Add paddingBlock and paddingInline props for directional padding control.

Patch Changes

• #7652 5d19e2b Thanks @​owenniblock! - useAnchoredPosition: recalculate overlay position when any scrollable ancestor (or the window) is scrolled.

• #7707 6431bfe Thanks @​liuliu-dev! - Fix anchor-name not being set on the anchor element when SelectPanel is opened in Copilot code agent.

• #7633 a107d39 Thanks @​copilot-swe-agent! - Graduate primer_react_css_has_selector_perf feature flag: the CSS :has() performance optimization (body[data-dialog-scroll-disabled]) is now the default behavior for Dialog scroll disabling

• #7695 780fc3d Thanks @​mattcosta7! - perf(ThemeProvider): Reduce unnecessary renders and effect cascades

  • Replace useState + useEffect SSR hydration handoff with useSyncExternalStore — eliminates post-hydration re-render
  • Replace useState + useEffect in useSystemColorMode with useSyncExternalStore — eliminates effect gap and stale-then-update flicker
  • Cache getServerHandoff DOM read + JSON.parse per ID (runs once, not on every call)
  • Memoize context value object to prevent unnecessary re-renders of all consumers

• #7706 fd8910a Thanks @​liuliu-dev! - ActionList.Item: fix inline descriptions being referenced via aria-labelledby instead of aria-describedby

@​primer/react@​38.18.0

... (truncated)

Commits

• aeffb84 Release tracking 38.20.0 (#7740)
• 5c34ab4 feat(Timeline): add variant prop to Timeline.Badge (#7698)
• d7380a7 remove primer_react_breadcrumbs_overflow_menu feature flag (#7752)
• 30dfb69 chore(deps-dev): bump flatted from 3.3.3 to 3.4.2 (#7687)
• d7b9313 Replace polyfill with useAnchoredPosition (#7725)
• efa7af8 chore: remove primer_react_spinner_synchronize_animations feature flag (#7739)
• 5402c71 chore: update @​github/relative-time-element to 5.0.0 (#7741)
• 94c96a4 fix(ActionList): replace deprecated --control-medium-lineBoxHeight with --bas...
• b9211db chore: graduate primer_react_overlay_max_height_clamp_to_viewport (#7733)
• b7dfb78 fix(IssueLabelToken): Fix lightness-switch formula for label text contrast (#...
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