Upgrade @octokit/rest to 19.0.3

This upgrade contains changes to the API types which leads to several changes
around the code base handling the now more precise types.

Signed-off-by: Crevil <bjoern.soerensen@gmail.com>

package.json

@@ -59,7 +59,7 @@
   },
   "devDependencies": {
     "@changesets/cli": "^2.14.0",
-    "@octokit/rest": "^18.12.0",
+    "@octokit/rest": "^19.0.3",
     "@spotify/prettier-config": "^13.0.0",
     "@types/node": "^16.11.26",
     "@types/webpack": "^5.28.0",