chore(deps): update dependency @octokit/tsconfig to v4 (#235)

Author: renovate[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "lint:fix": "prettier --write '{src,test}/**/*' README.md package.json",
     "pretest": "npm run -s lint && npm run build",
     "test": "NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" npx jest --coverage",
-    "test:typescript": "npx tsc --noEmit --declaration --noUnusedLocals --esModuleInterop --strict --module node16 --moduleResolution node16 test/typescript-validate.ts",
+    "test:typescript": "npx tsc --noEmit --declaration --noUnusedLocals --esModuleInterop --strict --module node16 --moduleResolution node16 --exactOptionalPropertyTypes --strict test/typescript-validate.ts",
     "test:watch": "NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" npx jest --watch",
     "test:e2e": "NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" npx jest --testRegex test/*.e2e.ts"
   },
@@ -31,7 +31,7 @@
   "devDependencies": {
     "@octokit/core": "^6.0.0",
     "@octokit/plugin-rest-endpoint-methods": "^13.0.0",
-    "@octokit/tsconfig": "^3.0.0",
+    "@octokit/tsconfig": "^4.0.0",
     "@types/fetch-mock": "^7.3.1",
     "@types/jest": "^29.0.0",
     "@types/node": "^20.0.0",