chore(deps): bump benchmark from 0.4.1 to 0.5.0 in /example

Bumps [benchmark](https://github.com/ruby/benchmark) from 0.4.1 to 0.5.0.
- [Release notes](https://github.com/ruby/benchmark/releases)
- [Commits](ruby/benchmark@v0.4.1...v0.5.0)

---
updated-dependencies:
- dependency-name: benchmark
  dependency-version: 0.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

example/Gemfile.lock

@@ -24,7 +24,7 @@ GEM
       json (>= 1.5.1)
     atomos (0.1.3)
     base64 (0.3.0)
-    benchmark (0.4.1)
+    benchmark (0.5.0)
     bigdecimal (3.3.1)
     claide (1.1.0)
     cocoapods (1.15.2)