[Snyk] Security upgrade webmock from 3.23.0 to 3.23.1

[keyasuda]

Snyk has created this PR to fix 2 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile
• Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Uncontrolled Resource Consumption ('Resource Exhaustion') SNYK-RUBY-REXML-7577227	738
	Denial of Service (DoS) SNYK-RUBY-REXML-7577228	631

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🦉 Uncontrolled Resource Consumption ('Resource Exhaustion')