Bump msgpack from 1.8.0 to 1.8.2

Bumps [msgpack](https://github.com/msgpack/msgpack-ruby) from 1.8.0 to 1.8.2.
- [Changelog](https://github.com/msgpack/msgpack-ruby/blob/master/ChangeLog)
- [Commits](msgpack/msgpack-ruby@v1.8.0...v1.8.2)

---
updated-dependencies:
- dependency-name: msgpack
  dependency-version: 1.8.2
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -167,7 +167,7 @@ GEM
     minitest (6.0.6)
       drb (~> 2.0)
       prism (~> 1.5)
-    msgpack (1.8.0)
+    msgpack (1.8.2)
     mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
     mustermann-grape (1.1.0)