Bump solargraph from 0.38.2 to 0.38.3

Bumps [solargraph](https://github.com/castwide/solargraph) from 0.38.2 to 0.38.3.
- [Release notes](https://github.com/castwide/solargraph/releases)
- [Commits](castwide/solargraph@v0.38.2...v0.38.3)

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

Gemfile.lock

@@ -198,7 +198,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    solargraph (0.38.2)
+    solargraph (0.38.3)
       backport (~> 1.1)
       benchmark
       bundler (>= 1.17.2)
@@ -230,7 +230,7 @@ GEM
       sync
     tzinfo (1.2.6)
       thread_safe (~> 0.1)
-    unicode-display_width (1.6.0)
+    unicode-display_width (1.6.1)
     warden (1.2.8)
       rack (>= 2.0.6)
     websocket-driver (0.6.5)