Bump @primer/octicons from 15.1.0 to 19.10.0

Bumps [@primer/octicons](https://github.com/primer/octicons) from 15.1.0 to 19.10.0.
- [Release notes](https://github.com/primer/octicons/releases)
- [Changelog](https://github.com/primer/octicons/blob/main/CHANGELOG.md)
- [Commits](primer/octicons@v15.1.0...v19.10.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

package.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": "^19.10.0",
     "@primer/octicons-react": "^15.1.0",
     "accept-language-parser": "^1.5.0",
     "ajv": "^8.4.0",