Bump codecov from 0.2.5 to 0.2.9

Bumps [codecov](https://github.com/codecov/codecov-ruby) from 0.2.5 to 0.2.9.
- [Release notes](https://github.com/codecov/codecov-ruby/releases)
- [Changelog](https://github.com/codecov/codecov-ruby/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-ruby@v0.2.5...v0.2.9)

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

Gemfile.lock

@@ -82,8 +82,7 @@ GEM
       ci_reporter (~> 2.0)
       test-unit (>= 2.5.5, < 4.0)
     climate_control (0.2.0)
-    codecov (0.2.5)
-      colorize
+    codecov (0.2.9)
       json
       simplecov
     coderay (1.1.2)
@@ -94,7 +93,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    colorize (0.8.1)
     commonjs (0.2.7)
     composite_primary_keys (11.2.0)
       activerecord (~> 5.2.1)