Bump solargraph from 0.39.15 to 0.39.16

Bumps [solargraph](https://github.com/castwide/solargraph) from 0.39.15 to 0.39.16.
- [Release notes](https://github.com/castwide/solargraph/releases)
- [Commits](https://github.com/castwide/solargraph/compare/v0.39.15...v0.39.16)

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

Gemfile.lock

@@ -163,7 +163,7 @@ GEM
       mimemagic (~> 0.3.0)
       terrapin (~> 0.6.0)
     parallel (1.19.2)
-    parser (2.7.1.4)
+    parser (2.7.1.5)
       ast (~> 2.4.1)
     pg (1.2.3)
     puma (5.0.0)
@@ -228,8 +228,9 @@ GEM
       rubocop-ast (>= 0.4.0, < 1.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.4.2)
-      parser (>= 2.7.1.4)
+    rubocop-ast (0.7.0)
+      parser (>= 2.7.1.5)
+      strscan (>= 1.0.0)
     ruby-progressbar (1.10.1)
     rubyzip (2.0.0)
     safe_yaml (1.0.5)
@@ -252,7 +253,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.2)
-    solargraph (0.39.15)
+    solargraph (0.39.16)
       backport (~> 1.1)
       benchmark
       bundler (>= 1.17.2)
@@ -275,6 +276,7 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     sqlite3 (1.4.2)
+    strscan (1.0.3)
     terrapin (0.6.0)
       climate_control (>= 0.0.3, < 1.0)
     therubyracer (0.12.3)