Downgrade nokogiri to 1.11.3

Full scope: https://github.com/dgroup/lazylead/milestone/34?closed=1

See #455, release log:

• 5b9feef by @VikNik599: Downgrade nokogiri to 1.11.3 d...
• 9c07f02 by @dgroup: #452: update rubocop to 1.19.0
• 7545861 by @dgroup: #452: Update rubocop requireme...
• 937c41d by @VikNik599: Move HasLabel description to c...
• e9961d3 by @VikNik599: accuracy/has_label
• 9e7b60c by @dependabot[bot]: Update rubocop requirement fro...

Released by Rultor 1.69.1, see build log