fix: remove dotenv dependency and update environment loading in Playwright config

Author: OliverDudgeon

package.json

@@ -117,7 +117,6 @@
     "@semantic-release/npm": "13.1.5",
     "@semantic-release/release-notes-generator": "14.1.1",
     "@squonk/eslint-config": "3.1.0",
-    "dotenv": "16.6.1",
     "eslint": "10.4.0",
     "husky": "9.1.7",
     "identity-obj-proxy": "3.0.0",

playwright.config.ts

@@ -1,7 +1,7 @@
 import { defineConfig } from "@playwright/test";
 import path from "node:path";
 
-require("dotenv").config({ path: path.resolve(process.cwd(), ".env.test.local") });
+process.loadEnvFile(path.resolve(__dirname, ".env.test.local"));
 
 const baseURL = new URL(process.env.BASE_URL as string);
 baseURL.pathname = process.env.BASE_PATH ?? "/";