Bump rbtrace from 0.4.14 to 0.5.1

Bumps [rbtrace](https://github.com/tmm1/rbtrace) from 0.4.14 to 0.5.1.
- [Changelog](https://github.com/tmm1/rbtrace/blob/master/CHANGELOG)
- [Commits](tmm1/rbtrace@v0.4.14...v0.5.1)

---
updated-dependencies:
- dependency-name: rbtrace
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -270,7 +270,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rb-readline (0.5.5)
-    rbtrace (0.4.14)
+    rbtrace (0.5.1)
       ffi (>= 1.0.6)
       msgpack (>= 0.4.3)
       optimist (>= 3.0.0)