build(deps): [Snyk] Security upgrade ethers from 6.13.0 to 6.13.1 (#2624)

fix: k6/package.json & k6/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-WS-7266574

Signed-off-by: Logan Nguyen <logan.nguyen@swirldslabs.com>
Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Author: swirlds-automation

k6/package-lock.json

@@ -10,6 +10,6 @@
   },
   "dependencies": {
     "env-cmd": "^10.1.0",
-    "ethers": "^6.13.0"
+    "ethers": "^6.13.1"
   }
 }