Bump @primer/octicons from 15.1.0 to 19.15.2

Bumps [@primer/octicons](https://github.com/primer/octicons) from 15.1.0 to 19.15.2.
- [Release notes](https://github.com/primer/octicons/releases)
- [Changelog](https://github.com/primer/octicons/blob/main/CHANGELOG.md)
- [Commits](primer/octicons@v15.1.0...v19.15.2)

---
updated-dependencies:
- dependency-name: "@primer/octicons"
  dependency-version: 19.15.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "@hapi/accept": "^5.0.2",
     "@primer/components": "^29.1.1",
     "@primer/css": "^17.9.0",
-    "@primer/octicons": "^15.1.0",
+    "@primer/octicons": "^19.15.2",
     "@primer/octicons-react": "^15.1.0",
     "accept-language-parser": "^1.5.0",
     "ajv": "^8.4.0",