Update dependency i18next-conv to v15

Author: renovate[bot]

package.json

@@ -99,7 +99,7 @@
 		"eslint-config-prettier": "9.1.0",
 		"eslint-plugin-jest": "28.9.0",
 		"eslint-plugin-react": "7.37.2",
-		"i18next-conv": "14.1.0",
+		"i18next-conv": "15.1.0",
 		"i18next-scanner": "4.6.0",
 		"jest": "29.7.0",
 		"jest-environment-jsdom": "29.7.0",