fix(deps): pin dependency rollup-plugin-esbuild to 6.2.1

Author: renovate[bot]

package-lock.json

@@ -152,7 +152,7 @@
     "lint-staged": "16.1.2",
     "mocha": "11.6.0",
     "npm-run-all": "4.1.5",
-    "rollup-plugin-esbuild": "^6.2.1",
+    "rollup-plugin-esbuild": "6.2.1",
     "rollup-plugin-node-externals": "8.0.1",
     "shx": "0.4.0",
     "sinon": "21.0.0",