[Snyk] Security upgrade rubocop from 1.56.4 to 1.57.0

[busterb]

Snyk has created this PR to fix 2 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
	Uncontrolled Resource Consumption ('Resource Exhaustion') SNYK-RUBY-REXML-7577227	738
	Denial of Service (DoS) SNYK-RUBY-REXML-7577228	631

---

[!IMPORTANT]

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

---

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 📜 Customise PR templates 🛠 Adjust project settings 📚 Read about Snyk's upgrade logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Uncontrolled Resource Consumption ('Resource Exhaustion')

[//]: # 'snyk:metadata:{"customTemplate":{"variablesUsed":[],"fieldsUsed":[]},"dependencies":[{"name":"rubocop","from":"1.56.4","to":"1.57.0"}],"env":"prod","issuesToFix":[{"exploit_maturity":"Proof of Concept","id":"SNYK-RUBY-REXML-7577227","priority_score":738,"priority_score_factors":[{"type":"exploit","label":"Proof of Concept","score":107},{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"6.9","score":345},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Uncontrolled Resource Consumption ('Resource Exhaustion')"},{"exploit_maturity":"No Known Exploit","id":"SNYK-RUBY-REXML-7577228","priority_score":631,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"6.9","score":345},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Denial of Service (DoS)"}],"prId":"3e3aab76-5227-42e7-aa26-16c9bfeba84e","prPublicId":"3e3aab76-5227-42e7-aa26-16c9bfeba84e","packageManager":"rubygems","priorityScoreList":[738,631],"projectPublicId":"6832fda9-ce31-4466-b686-f7e947dbf9d7","projectUrl":"https://app.snyk.io/org/busterb/project/6832fda9-ce31-4466-b686-f7e947dbf9d7?utm_source=github&utm_medium=referral&page=fix-pr","prType":"fix","templateFieldSources":{"branchName":"default","commitMessage":"default","description":"default","title":"default"},"templateVariants":["updated-fix-title","pr-warning-shown","priorityScore"],"type":"auto","upgrade":["SNYK-RUBY-REXML-7577227","SNYK-RUBY-REXML-7577228"],"vulns":["SNYK-RUBY-REXML-7577227","SNYK-RUBY-REXML-7577228"],"patch":[],"isBreakingChange":false,"remediationStrategy":"vuln"}'