#483 build(deps-dev): bump standard from 1.55.0 to 1.56.0 in /docs

Sourced from standard's changelog.

1.56.0

• Updates rubocop to 1.88.0

• d695ba0 🏆⚽️ v1.56.0
• 86a92fa Merge pull request #823 from standardrb/upgrade-2026-07-15
• dfcaef8 Fixes Parallel's overzealous update
• 5e68710 Updates rubocop to 1.88
• 95f959b Merge pull request #822 from standardrb/dependabot/bundler/ruby-lsp-0.26.10
• 42c9d35 Bump ruby-lsp from 0.26.9 to 0.26.10
• 79cd977 Merge pull request #818 from standardrb/dependabot/bundler/language_server-pr...
• 3011204 Bump language_server-protocol from 3.17.0.5 to 3.17.0.6
• 505e8e6 Merge pull request #797 from standardrb/dependabot/bundler/ruby-lsp-0.26.9
• af5498a Merge pull request #816 from standardrb/dependabot/github_actions/step-securi...
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