fix: include esbuild as devDependency

[abiriadev]

First of all, thanks for the awesome project!

Problem

The build script calles esbuild:

cloudflare-worker-jwt/package.json

Line 12 in 2d7eed4

"build": "tsc & esbuild --bundle --target=esnext --platform=neutral --outfile=index.js src/index.ts & wait",

(ref: c6b3a83)

However, ESBuild is missing from the devDependencies in the package.json file:

cloudflare-worker-jwt/package.json

Lines 32 to 37 in 2d7eed4

	"devDependencies": {
	"@cloudflare/workers-types": "^4.20240208.0",
	"@edge-runtime/vm": "^3.2.0",
	"typescript": "^5.3.3",
	"vitest": "^1.3.1"
	}

Thus, the npm run build script fails:

Changes

This PR just adds missing esbuild to the devDependencies in the package.json file, to build the project successfully. (in CI server in my case)

[tsndr]

Thanks :)