Bump solargraph from 0.39.16 to 0.39.17

Bumps [solargraph](https://github.com/castwide/solargraph) from 0.39.16 to 0.39.17.
- [Release notes](https://github.com/castwide/solargraph/releases)
- [Commits](https://github.com/castwide/solargraph/compare/v0.39.16...v0.39.17)

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

Gemfile.lock

@@ -211,7 +211,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     ref (2.0.0)
-    regexp_parser (1.8.0)
+    regexp_parser (1.8.1)
     reverse_markdown (2.0.0)
       nokogiri
     rexml (3.2.4)
@@ -228,9 +228,8 @@ GEM
       rubocop-ast (>= 0.5.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.7.0)
+    rubocop-ast (0.7.1)
       parser (>= 2.7.1.5)
-      strscan (>= 1.0.0)
     ruby-progressbar (1.10.1)
     rubyzip (2.0.0)
     safe_yaml (1.0.5)
@@ -253,7 +252,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.2)
-    solargraph (0.39.16)
+    solargraph (0.39.17)
       backport (~> 1.1)
       benchmark
       bundler (>= 1.17.2)
@@ -276,7 +275,6 @@ 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)