primer/octicons octicons_gem@19.37.0 on GitHub

#1355 0b52df259a3e4df4396f7741e53438e9a022d46f Thanks @janmaarten-a11y! - Add triangle, triangle-circle, triangle-fill, and git-pull-request-unlisted, and provide both 16px and 24px artwork for bookmark-fill and repo-delete. Preserve play as a supported circled alias, retain the deprecated bookmark-filled and repo-deleted names with their existing artwork, and keep existing helper defaults.