development-dependency: bump solargraph from 0.43.3 to 0.44.0

Bumps solargraph from 0.43.3 to 0.44.0.

Changelog

Sourced from solargraph's changelog.

0.44.0 - September 27, 2021

• Allow opening parenthesis, space, and comma when using Diff::LCS (#465)
• Support textDocument/documentHighlight
• Library#references_from performs shallow matches

Commits

• ff1a93a Merge branch 'master' of s:\repos\solargraph
• 5fdebee Refactored synchronized_find_recipient_node
• 5e647bf Add repaired_find_recipient_node to legacy parser
• 2ea80ef Library#references_from performs shallow matches
• cec652c Merge branch 'master' into document-highlight
• 9db7853 Detect recipient nodes in repaired sources
• 86c430b Allow opening parenthesis, space, and comma when using Diff::LCS (#465)
• See full diff in compare view

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