fix: benchmark ESM build compatibility

[kieran-ryan]

🤔 What's changed?

• Migrated the benchmark script from MJS to ESM to match b7d7667 and enable it to run

Present module not found error

@kieran-ryan ➜ /workspaces/node-glob (main) $ npm run bench

glob@10.3.15 prebench
npm run prepare

glob@10.3.15 prepare
tshy

glob@10.3.15 bench
bash benchmark.sh

Making benchmark fixtures

--- pattern: '{0000,0,1111,1}/{0000,0,1111,1}/{0000,0,1111,1}/**' ---
~~ sync ~~
node fast-glob sync 0m0.091s 1600
node globby sync 0m0.118s 1600
node current globSync mjs node:internal/modules/esm/resolve:265
throw new ERR_MODULE_NOT_FOUND(
^

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/workspaces/node-glob/dist/mjs/index.js' imported from /workspaces/node-glob/bench-working-dir/sync.mjs
at finalizeResolution (node:internal/modules/esm/resolve:265:11)
at moduleResolve (node:internal/modules/esm/resolve:933:10)
at defaultResolve (node:internal/modules/esm/resolve:1157:11)
at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:390:12)
at ModuleLoader.resolve (node:internal/modules/esm/loader:359:25)
at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:234:38)
at ModuleWrap. (node:internal/modules/esm/module_job:87:39)
at link (node:internal/modules/esm/module_job:86:36) {
code: 'ERR_MODULE_NOT_FOUND',
url: 'file:///workspaces/node-glob/dist/mjs/index.js'
}

Node.js v20.12.1

real 0m0.033s
user 0m0.028s
sys 0m0.004s

🏷️ What kind of change is this?

• 🐛 Bug fix (non-breaking change which fixes a defect)