See: https://github.com/sparklemotion/nokogiri/releases/tag/v1.18.0
- required for ruby 3.4 compatibility
- add more platforms to lockfile to support
docker build process, due to changes
in the nokogiri native gem setup where
-musl and -gnu linux platforms are no longer
interchangeable
- bundler >= 2.5.6 required according to Nokogiri release
notes, so updated to current latest version (2.6.5)
