Bump ruby-lsp from 0.26.1 to 0.26.8

Bumps [ruby-lsp](https://github.com/Shopify/ruby-lsp) from 0.26.1 to 0.26.8.
- [Release notes](https://github.com/Shopify/ruby-lsp/releases)
- [Commits](Shopify/ruby-lsp@v0.26.1...v0.26.8)

---
updated-dependencies:
- dependency-name: ruby-lsp
  dependency-version: 0.26.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -424,8 +424,9 @@ GEM
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
     rake (13.3.1)
-    rbs (3.10.3)
+    rbs (4.0.0)
       logger
+      prism (>= 1.6.0)
       tsort
     rdoc (7.2.0)
       erb
@@ -503,7 +504,7 @@ GEM
       rubocop-rspec (~> 3.5)
     ruby-graphviz (1.2.5)
       rexml
-    ruby-lsp (0.26.1)
+    ruby-lsp (0.26.8)
       language_server-protocol (~> 3.17.0)
       prism (>= 1.2, < 2.0)
       rbs (>= 3, < 5)