chore(deps): update dependency @openedx/frontend-build to v14.0.15

Author: renovate[bot]

package.json

@@ -76,7 +76,7 @@
   },
   "devDependencies": {
     "@edx/browserslist-config": "^1.1.1",
-    "@openedx/frontend-build": "14.0.14",
+    "@openedx/frontend-build": "14.0.15",
     "@edx/reactifex": "^2.1.1",
     "@testing-library/dom": "^10.0.0",
     "@testing-library/jest-dom": "6.4.6",