Bump @gatling.io/core in /articles/githubintegration/Gatling/javascript (#142)

Bumps [@gatling.io/core](https://github.com/gatling/gatling-js) from 3.14.306 to 3.14.400.
- [Release notes](https://github.com/gatling/gatling-js/releases)
- [Commits](gatling/gatling-js@v3.14.306...v3.14.400)

---
updated-dependencies:
- dependency-name: "@gatling.io/core"
  dependency-version: 3.14.400
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

articles/githubintegration/Gatling/javascript/package-lock.json

@@ -5,7 +5,7 @@
   "type": "module",
   "main": "target/bundle",
   "dependencies": {
-    "@gatling.io/core": "3.14.306",
+    "@gatling.io/core": "3.14.400",
     "@gatling.io/http": "3.14.400"
   },
   "devDependencies": {