[Snyk] Fix for 5 vulnerabilities

[twilio-product-security]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `rubygems` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - ruby/rails-controller/Gemfile

⚠️ Warning

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

#### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Denial of Service (DoS)
[SNYK-RUBY-NOKOGIRI-6056551](https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-6056551) | Yes | Proof of Concept  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Denial of Service (DoS)
[SNYK-RUBY-NOKOGIRI-6056552](https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-6056552) | Yes | Proof of Concept  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Denial of Service (DoS)
[SNYK-RUBY-NOKOGIRI-6056553](https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-6056553) | Yes | Proof of Concept  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Denial of Service (DoS)
[SNYK-RUBY-NOKOGIRI-6056554](https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-6056554) | Yes | Proof of Concept  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Denial of Service (DoS)
[SNYK-RUBY-NOKOGIRI-6056555](https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-6056555) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised. Check the changes in this PR to ensure they won't cause issues with your project. ------------ **Note:** *You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.* For more information: 🧐 [View latest project report](https://app.snyk.io/org/twilio-47w/project/1f2aaff3-ca18-46a5-8ff3-efd9ce3a7d1a?utm_source=github-enterprise&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/twilio-47w/project/1f2aaff3-ca18-46a5-8ff3-efd9ce3a7d1a?utm_source=github-enterprise&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"3076e03d-21a9-4b12-a6e6-697aea0be6bf","prPublicId":"3076e03d-21a9-4b12-a6e6-697aea0be6bf","dependencies":[{"name":"capybara","from":"3.23.0","to":"3.24.0"},{"name":"coffee-rails","from":"4.2.2","to":"5.0.0"},{"name":"rails","from":"5.1.7","to":"5.2.0"},{"name":"sass-rails","from":"5.0.7","to":"5.0.8"},{"name":"twilio-ruby","from":"5.18.0","to":"5.19.0"},{"name":"web-console","from":"3.7.0","to":"4.0.0"}],"packageManager":"rubygems","projectPublicId":"1f2aaff3-ca18-46a5-8ff3-efd9ce3a7d1a","projectUrl":"https://app.snyk.io/org/twilio-47w/project/1f2aaff3-ca18-46a5-8ff3-efd9ce3a7d1a?utm_source=github-enterprise&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-RUBY-NOKOGIRI-6056551","SNYK-RUBY-NOKOGIRI-6056552","SNYK-RUBY-NOKOGIRI-6056553","SNYK-RUBY-NOKOGIRI-6056554","SNYK-RUBY-NOKOGIRI-6056555"],"upgrade":["SNYK-RUBY-NOKOGIRI-6056551","SNYK-RUBY-NOKOGIRI-6056552","SNYK-RUBY-NOKOGIRI-6056553","SNYK-RUBY-NOKOGIRI-6056554","SNYK-RUBY-NOKOGIRI-6056555"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["pr-warning-shown","priorityScore"],"priorityScoreList":[696,696,696,696,696],"remediationStrategy":"vuln"}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Denial of Service (DoS)](https://learn.snyk.io/lesson/redos/?loc=fix-pr)