[Snyk] Security upgrade rspec-rails from 2.14.0 to 8.0.0

[beaucarnes]

Snyk has created this PR to fix 9 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile

⚠️ Warning

Failed to update the Gemfile.lock, please update manually before merging. 

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Arbitrary Code Injection SNYK-RUBY-RACK-2848599	704
	Cross-site Request Forgery (CSRF) SNYK-RUBY-RACK-572377	646
	Denial of Service (DoS) SNYK-RUBY-RACK-2848600	589
	Information Exposure SNYK-RUBY-ACTIONPACK-2400638	584
	Cross-site Scripting (XSS) SNYK-RUBY-ACTIVESUPPORT-3360028	519
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-ACTIONPACK-3237231	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-ACTIONPACK-3237232	479
	Regular Expression Denial of Service (ReDoS) SNYK-RUBY-ACTIVESUPPORT-3237242	479
	Cross-site Scripting (XSS) SNYK-RUBY-ACTIONPACK-5741907	449

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• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
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