chore(deps): update dependency @octokit/core to v5 (#332)

BREAKING CHANGE: require `@octokit/core` > 5

---------

Co-authored-by: wolfy1339 <4595477+wolfy1339@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -19,16 +19,16 @@
   "author": "Gregor Martynus (https://twitter.com/gr2m)",
   "license": "MIT",
   "peerDependencies": {
-    "@octokit/core": ">=3"
+    "@octokit/core": ">=5"
   },
   "devDependencies": {
-    "@octokit/core": "^4.0.0",
+    "@octokit/core": "^5.0.0",
     "@octokit/tsconfig": "^2.0.0",
     "@types/fetch-mock": "^7.3.2",
     "@types/jest": "^29.0.0",
     "@types/node": "^18.0.0",
     "esbuild": "^0.18.0",
-    "fetch-mock": "^9.0.0",
+    "fetch-mock": "npm:@gr2m/fetch-mock@9.11.0-pull-request-644.1",
     "glob": "^10.2.7",
     "jest": "^29.0.0",
     "prettier": "3.0.0",