bundle update at 2024-05-06 04:00:45 JST (Drop support ruby < 3.1.2)

Updated RubyGems:

• dotenv: 3.1.0...3.1.1
• httparty: 0.21.0...0.22.0
• multi_xml: 0.6.0...0.7.1
• rubocop-ast: 1.31.2...1.31.3
• rubocop-rspec: 2.29.1...2.29.2

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