Bump the all group with 1 update (#490)

Updates the requirements on [rspec](https://github.com/rspec/rspec-metagem) to permit the latest version.

Updates `rspec` to 3.13.0
- [Commits](rspec/rspec-metagem@v3.12.0...v3.13.0)

---
updated-dependencies:
- dependency-name: rspec
  dependency-type: direct:production
  dependency-group: all
...

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Gemfile

@@ -6,7 +6,7 @@ gemspec
 
 gem "faraday", "~> 2.8.1"
 gem "pry", "~> 0.14.2"
-gem "rspec", "~> 3.12.0"
+gem "rspec", "~> 3.13.0"
 gem "rubocop", "~> 1.60.1"
 gem "rubocop-performance", "~> 1.20.0"
 gem "rubocop-rake", "~> 0.6.0"