Update gems versions
What does this MR do?
Explicitly defines gem versions in Gemfile
Bump versions:
- nokogiri
1.10.4->1.10.9 - rack
2.0.6->2.2.2 - selenium-webdriver
3.141.0->3.142.7
Why is this change being made?
To fix vulnerabilities in older gem versions detected by the security scanner.
Edited by Vasilii Iakliushin