Я смог установить его.
вот мои зависимости:
"@wdio/cli": "^6.1.5",
"@wdio/cucumber-framework": "^6.1.1",
"@wdio/local-runner": "^6.1.5",
"@wdio/sauce-service": "^6.1.0",
"@wdio/spec-reporter": "^6.1.5",
"@wdio/sync": "^6.1.5",
"chromedriver": "^81.0.0",
"wdio-chromedriver-service": "^6.0.2"
и версия узла: v12.16.3