Bump simplecov-cobertura from 3.0.0 to 3.1.0 (#373)

Bumps [simplecov-cobertura](https://github.com/jessebs/simplecov-cobertura) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/jessebs/simplecov-cobertura/releases)
- [Commits](jessebs/simplecov-cobertura@v3.0.0...v3.1.0)

---
updated-dependencies:
- dependency-name: simplecov-cobertura
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -35,7 +35,7 @@ GEM
     redcarpet (3.6.1)
     regexp_parser (2.11.2)
     require-hooks (0.2.2)
-    rexml (3.4.1)
+    rexml (3.4.2)
     rspec (3.13.1)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -84,7 +84,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
-    simplecov-cobertura (3.0.0)
+    simplecov-cobertura (3.1.0)
       rexml
       simplecov (~> 0.19)
     simplecov-html (0.13.2)