Bump debug from 1.6.2 to 1.6.3

Bumps [debug](https://github.com/ruby/debug) from 1.6.2 to 1.6.3.
- [Release notes](https://github.com/ruby/debug/releases)
- [Commits](https://github.com/ruby/debug/compare/v1.6.2...v1.6.3)

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

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

Gemfile.lock

@@ -242,7 +242,7 @@ GEM
       debase-ruby_core_source (= 0.10.12)
       msgpack
     debase-ruby_core_source (0.10.12)
-    debug (1.6.2)
+    debug (1.6.3)
       irb (>= 1.3.6)
       reline (>= 0.3.1)
     debugger-linecache (1.2.0)
@@ -345,7 +345,7 @@ GEM
       activerecord (>= 3.0)
     io-console (0.5.11)
     ipaddress (0.8.3)
-    irb (1.4.1)
+    irb (1.4.2)
       reline (>= 0.3.0)
     jmespath (1.6.1)
     jquery-rails (4.4.0)