fix: benchmark CI

[gurgunday]

We cannot only install production dependencies in these workflows as they depend on devDeps to run:

fastify/.github/workflows/benchmark.yml

Line 36 in 13f9b6e

npm install --only=production --ignore-scripts

fastify/.github/workflows/benchmark.yml

Line 41 in 13f9b6e

npm run --silent benchmark > ./bench-result.md

fastify/package.json

Line 10 in 13f9b6e

"benchmark": "concurrently -k -s first \"node ./examples/benchmark/simple.js\" \"autocannon -c 100 -d 30 -p 10 localhost:3000/\"",

fastify/package.json

Lines 155 to 170 in 13f9b6e

	"devDependencies": {
	"@fastify/pre-commit": "^2.0.2",
	"@sinclair/typebox": "^0.31.17",
	"@sinonjs/fake-timers": "^11.1.0",
	"@types/node": "^20.8.4",
	"@typescript-eslint/eslint-plugin": "^6.7.5",
	"@typescript-eslint/parser": "^6.7.5",
	"ajv": "^8.12.0",
	"ajv-errors": "^3.0.0",
	"ajv-formats": "^2.1.1",
	"ajv-i18n": "^4.2.0",
	"ajv-merge-patch": "^5.0.1",
	"autocannon": "^7.14.0",
	"branch-comparer": "^1.1.0",
	"c8": "^8.0.1",
	"concurrently": "^8.2.2",

[Fdawgs]

Good spot