Update webdriverio to latest 8.x version

Author: thomashohn

package.json

@@ -165,7 +165,7 @@
     "typedoc-plugin-markdown": "4.2.10",
     "typescript": "5.6.3",
     "wdio-docker-service": "1.5.0",
-    "webdriverio": "8.39.1",
+    "webdriverio": "8.40.6",
     "xml2js": "0.6.2",
     "xpath": "0.0.34"
   },