Bump solargraph from 0.49.0 to 0.50.0

Bumps [solargraph](https://github.com/castwide/solargraph) from 0.49.0 to 0.50.0.
- [Changelog](https://github.com/castwide/solargraph/blob/master/CHANGELOG.md)
- [Commits](castwide/solargraph@v0.49.0...v0.50.0)

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

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

Gemfile.lock

@@ -21,7 +21,7 @@ GEM
     backport (1.2.0)
     base64 (0.2.0)
     bcrypt (3.1.20)
-    benchmark (0.2.1)
+    benchmark (0.3.0)
     bigdecimal (3.1.4)
     coderay (1.1.3)
     coffee-script (2.4.1)
@@ -53,18 +53,18 @@ GEM
       kramdown (~> 2.0)
     language_server-protocol (3.17.0.3)
     method_source (1.0.0)
-    mini_portile2 (2.8.4)
+    mini_portile2 (2.8.5)
     minitest (5.20.0)
     multi_json (1.15.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     mutex_m (0.2.0)
-    nokogiri (1.15.4)
+    nokogiri (1.15.5)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.15.4-arm64-darwin)
+    nokogiri (1.15.5-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.4-x86_64-linux)
+    nokogiri (1.15.5-x86_64-linux)
       racc (~> 1.4)
     parallel (1.24.0)
     parser (3.2.2.4)
@@ -129,7 +129,7 @@ GEM
       tilt (~> 2.0)
     sinatra-flash (0.3.0)
       sinatra (>= 1.0.0)
-    solargraph (0.49.0)
+    solargraph (0.50.0)
       backport (~> 1.2)
       benchmark
       bundler (~> 2.0)