Update dependencies and use Node 20

src/async-function.ts

@@ -4,7 +4,6 @@ import {Context} from '@actions/github/lib/context'
 import {GitHub} from '@actions/github/lib/utils'
 import * as glob from '@actions/glob'
 import * as io from '@actions/io'
-import fetch from 'node-fetch'
 
 const AsyncFunction = Object.getPrototypeOf(async () => null).constructor
 
@@ -15,7 +14,6 @@ type AsyncFunctionArguments = {
   exec: typeof exec
   glob: typeof glob
   io: typeof io
-  fetch: typeof fetch
   require: NodeRequire
   __original_require__: NodeRequire
 }

src/main.ts

@@ -7,7 +7,6 @@ import * as io from '@actions/io'
 import {requestLog} from '@octokit/plugin-request-log'
 import {retry} from '@octokit/plugin-retry'
 import {RequestRequestOptions} from '@octokit/types'
-import fetch from 'node-fetch'
 import {callAsyncFunction} from './async-function'
 import {RetryOptions, getRetryOptions, parseNumberArray} from './retry-options'
 import {wrapRequire} from './wrap-require'
@@ -59,8 +58,7 @@ async function main(): Promise<void> {
       core,
       exec,
       glob,
-      io,
-      fetch
+      io
     },
     script
   )