Bump wdio/selenium-standalone-service to 8.15.0 (#4661)

Author: thomashohn

package.json

@@ -129,7 +129,7 @@
     "@types/inquirer": "9.0.3",
     "@types/node": "22.10.2",
     "@wdio/sauce-service": "9.4.5",
-    "@wdio/selenium-standalone-service": "8.3.2",
+    "@wdio/selenium-standalone-service": "8.15.0",
     "@wdio/utils": "9.4.4",
     "@xmldom/xmldom": "0.9.5",
     "apollo-server-express": "3.13.0",