Update ruby-lsp requirement from ~> 0.17.4 to ~> 0.18.3

Updates the requirements on [ruby-lsp](https://github.com/Shopify/ruby-lsp) to permit the latest version.
- [Release notes](https://github.com/Shopify/ruby-lsp/releases)
- [Commits](Shopify/ruby-lsp@v0.17.4...v0.18.3)

---
updated-dependencies:
- dependency-name: ruby-lsp
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -41,7 +41,7 @@ gem "rubocop-minitest", "0.35.0"
 gem "rubocop-packaging", "0.5.2"
 gem "rubocop-performance", "1.21.1"
 gem "rubocop-rake", "0.6.0"
-gem "ruby-lsp", "~> 0.17.4"
+gem "ruby-lsp", "~> 0.18.3"
 gem "ruby-spacy", "~> 0.2.2"
 gem "sequel", "~> 5.82"
 gem "solargraph", "~> 0.48.0"