development-dependency: bump solargraph from 0.42.4 to 0.43.0

Bumps solargraph from 0.42.4 to 0.43.0.

Changelog

Sourced from solargraph's changelog.

0.43.0 - July 25, 2021

• Correct arity checks when restarg precedes arg (#418)
• Improve the performance of catalog by 4 times (#457)
• Type checker validates duck type variables and params (#453)
• Kernel#raise exception type checker
• Pin::Base#inspect includes path
• Fix arity with combined restargs and kwrestargs (#396)

Commits

• 11ec1cf Fix RubyVM hash_is_splatted? check
• 4873af2 Handle kwsplat in legacy parser
• d0c8557 Fix arity with combined restargs and kwrestargs (#396)
• 4c078c7 Merge branch 'master' into chain-hash
• 8a47fb0 Pin::Base#inspect includes path
• e0182fe Kernel#raise exception type checker
• 39dbd73 Explicit hash links
• 3267182 Type checker validates duck type variables and params (#453)
• e086b0d Version date
• 3c3b370 Improve the performance of catalog by 4 times (#457)
• See full diff in compare view

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