chore: remove coveralls as dev dependency (#463)

Author: Uzlopak

package.json

@@ -45,7 +45,6 @@
     "@typescript-eslint/eslint-plugin": "^7.3.1",
     "@typescript-eslint/parser": "^7.3.1",
     "concat-stream": "^2.0.0",
-    "coveralls": "^3.1.1",
     "fastify": "^5.0.0-alpha.3",
     "handlebars": "^4.7.8",
     "pino": "^9.1.0",