Bump steep from 1.8.3 to 1.9.1

Bumps [steep](https://github.com/soutaro/steep) from 1.8.3 to 1.9.1.
- [Release notes](https://github.com/soutaro/steep/releases)
- [Changelog](https://github.com/soutaro/steep/blob/master/CHANGELOG.md)
- [Commits](soutaro/steep@v1.8.3...v1.9.1)

---
updated-dependencies:
- dependency-name: steep
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -26,7 +26,7 @@ GEM
       tzinfo (~> 2.0, >= 2.0.5)
     ast (2.4.2)
     base64 (0.2.0)
-    benchmark (0.3.0)
+    benchmark (0.4.0)
     bigdecimal (3.1.8)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
@@ -35,20 +35,20 @@ GEM
     drb (2.2.1)
     ffi (1.17.0)
     ffi (1.17.0-x86_64-linux-gnu)
-    fileutils (1.7.2)
+    fileutils (1.7.3)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
     json (2.9.0)
     language_server-protocol (3.17.0.3)
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    logger (1.6.1)
+    logger (1.6.2)
     mini_mime (1.1.5)
-    minitest (5.25.1)
+    minitest (5.25.4)
     net-http (0.6.0)
       uri
-    parser (3.3.5.0)
+    parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
     racc (1.8.1)
@@ -60,7 +60,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rbs (3.6.1)
+    rbs (3.7.0)
       logger
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
@@ -75,9 +75,9 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.1)
-    securerandom (0.3.1)
+    securerandom (0.4.0)
     singleton (0.3.0)
-    steep (1.8.3)
+    steep (1.9.1)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)
       csv (>= 3.0.9)
@@ -88,7 +88,7 @@ GEM
       logger (>= 1.3.0)
       parser (>= 3.1)
       rainbow (>= 2.2.2, < 4.0)
-      rbs (~> 3.6.0)
+      rbs (~> 3.7.0)
       securerandom (>= 0.1)
       strscan (>= 1.0.0)
       terminal-table (>= 2, < 4)