Bump ruby-lsp from 0.19.1 to 0.20.0

Bumps [ruby-lsp](https://github.com/Shopify/ruby-lsp) from 0.19.1 to 0.20.0.
- [Release notes](https://github.com/Shopify/ruby-lsp/releases)
- [Commits](Shopify/ruby-lsp@v0.19.1...v0.20.0)

---
updated-dependencies:
- dependency-name: ruby-lsp
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -427,9 +427,9 @@ GEM
       rubocop-rspec (~> 3, >= 3.0.1)
     ruby-graphviz (1.2.5)
       rexml
-    ruby-lsp (0.19.1)
+    ruby-lsp (0.20.0)
       language_server-protocol (~> 3.17.0)
-      prism (>= 1.1, < 2.0)
+      prism (>= 1.2, < 2.0)
       rbs (>= 3, < 4)
       sorbet-runtime (>= 0.5.10782)
     ruby-progressbar (1.13.0)