deps-dev: update solargraph requirement from ~> 0.46.0 to ~> 0.47.0

Created by: dependabot[bot]

Updates the requirements on solargraph to permit the latest version.

Changelog

Sourced from solargraph's changelog.

0.47.0 - September 25, 2022

• Completion candidates for union types (#507)
• Nullify Hover object instead of contents value (#583)
• Mapping workspace stuck in 0 (#587)
• Fix parsing of nested subtypes (#589)
• Update YARD tags on Pin::Block methods (#588)
• @!visibility directive support (#566)

Commits

• f90c17e Formatting
• d7bdbf3 Additional visibility directive rules
• 8a925a6 Merge branch 'master' of github.com:castwide/solargraph
• ab2c5eb Implement yard directive visibility handling (#567)
• 8614018 Merge branch 'master' of github.com:castwide/solargraph
• 415f70b Changelog
• 9782df8 Update YARD tags on Pin::Block methods (#588)
• b042618 Test for #590
• 27f4990 Fix parsing of nested subtypes (#590)
• 164dd08 fix #587 (#593)
• Additional commits viewable in compare view

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