primer/css v17.0.0 on GitHub

#1370 cc0049c2 Thanks @simurai! - Replace border-overlay with border-primary
#1371 0c6bfc22 Thanks @tobiasahlin! - Marketing: Deprecate bg-shade-gradient
#1379 22a98b5c Thanks @tobiasahlin! - Add new marketing type scale
#1369 2ae2ae57 Thanks @tobiasahlin! - Marketing: Removing Inter font files and folder
#1339 0ca2648e Thanks @jonrohan! - Changeset change supported browsers.
#1373 aeae963d Thanks @tobiasahlin! - Remove redundant marketing layout selectors
#1380 4ac39740 Thanks @tobiasahlin! - Marketing: use size modifiers that don't look like breakpoints modifiers
#1352 b4950e39 Thanks @tobiasahlin! - Update marketing button styles
#1356 3b7e5d8c Thanks @jonrohan! - Remove dependency on primer/octicons and force overflow visible
#1372 e24b7cb0 Thanks @tobiasahlin! - Merge overlapping marketing spacing utilities into primer core

#1357 3dfb910f Thanks @hpalacio! - typography-base: process 'type' attribute of HTML

#1368 95b9f0f0 Thanks @simurai! - Use --color-icon-secondary for .blankslate-icon
#1350 2dbc6143 Thanks @simurai! - Bump @primer/primitives
#1385 1cfff7a4 Thanks @tobiasahlin! - Marketing typography: 64px → 68px for third size step
#1382 18bb377b Thanks @tobiasahlin! - Marketing: optimize body typography inheritance
#1392 0fea11a7 Thanks @tobiasahlin! - Marketing: Enable body content utilities to have their font-weight overwritten