build(deps-dev): bump solargraph from 0.55.1 to 0.55.4

Bumps [solargraph](https://github.com/castwide/solargraph) from 0.55.1 to 0.55.4.
- [Changelog](https://github.com/castwide/solargraph/blob/master/CHANGELOG.md)
- [Commits](castwide/solargraph@v0.55.1...v0.55.4)

---
updated-dependencies:
- dependency-name: solargraph
  dependency-version: 0.55.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -357,7 +357,7 @@ GEM
       ostruct (>= 0.2)
     openssl (3.3.0)
     os (1.1.4)
-    ostruct (0.6.1)
+    ostruct (0.6.2)
     palm_civet (1.1.0)
     parallel (1.27.0)
     parallel_tests (5.3.0)
@@ -546,7 +546,7 @@ GEM
       rack-protection (= 3.2.0)
       sinatra (= 3.2.0)
       tilt (~> 2.0)
-    solargraph (0.55.1)
+    solargraph (0.55.4)
       backport (~> 1.2)
       benchmark (~> 0.4)
       bundler (~> 2.0)