Bump steep from 1.9.2 to 1.9.3

Bumps [steep](https://github.com/soutaro/steep) from 1.9.2 to 1.9.3.
- [Release notes](https://github.com/soutaro/steep/releases)
- [Changelog](https://github.com/soutaro/steep/blob/master/CHANGELOG.md)
- [Commits](soutaro/steep@v1.9.2...v1.9.3)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -22,7 +22,7 @@ GEM
     ast (2.4.2)
     base64 (0.2.0)
     benchmark (0.4.0)
-    bigdecimal (3.1.8)
+    bigdecimal (3.1.9)
     binding_of_caller (1.0.1)
       debug_inspector (>= 1.2.0)
     concurrent-ruby (1.3.4)
@@ -65,7 +65,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rbs (3.7.0)
+    rbs (3.8.1)
       logger
     regexp_parser (2.9.3)
     rouge (4.4.0)
@@ -127,7 +127,7 @@ GEM
       net-ssh (>= 2.7)
       net-telnet
       sfl
-    steep (1.9.2)
+    steep (1.9.3)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)
       csv (>= 3.0.9)
@@ -138,7 +138,7 @@ GEM
       logger (>= 1.3.0)
       parser (>= 3.1)
       rainbow (>= 2.2.2, < 4.0)
-      rbs (~> 3.7.0)
+      rbs (~> 3.8)
       securerandom (>= 0.1)
       strscan (>= 1.0.0)
       terminal-table (>= 2, < 4)