fix: restore CJS compat (#651)

Compatibility was accidentally removed from this package in a3a9604

Typescript falsely reports that this package isn't compatible with CJS when it is. This package contains no runtime code and only types.

This is due to adding `"type": "module"` to the `package.json` in order to fix some type issues introduced by upgrading `@octokit/tsconfig`

package.json

@@ -5,7 +5,6 @@
     "access": "public",
     "provenance": true
   },
-  "type": "module",
   "description": "Shared TypeScript definitions for Octokit projects",
   "dependencies": {
     "@octokit/openapi-types": "^22.2.0"

tsconfig.json

@@ -5,7 +5,8 @@
     "declaration": true,
     "outDir": "pkg/dist-types",
     "emitDeclarationOnly": true,
-    "sourceMap": true
+    "sourceMap": true,
+    "verbatimModuleSyntax": false
   },
   "include": [
     "src/**/*"