[Snyk] Security upgrade react-scripts from 1.1.5 to 5.0.0

[jackromo888]

Snyk has created this PR to fix 29 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• fixtures/concurrent/time-slicing/package.json
• fixtures/concurrent/time-slicing/yarn.lock

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577916	776
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577917	776
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577918	776
	Server-side Request Forgery (SSRF) SNYK-JS-IP-6240864	751
	Improper Input Validation SNYK-JS-URLPARSE-2407770	726
	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	696
	Uncontrolled resource consumption SNYK-JS-BRACES-6838727	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-ES5EXT-6095076	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SEMVER-3247795	696
	Misinterpretation of Input SNYK-JS-URIJS-2440699	646
	Prototype Pollution SNYK-JS-JSONSCHEMA-1920922	644
	Access Restriction Bypass SNYK-JS-URLPARSE-2401205	641
	Authorization Bypass SNYK-JS-URLPARSE-2407759	641
	Authorization Bypass Through User-Controlled Key SNYK-JS-URLPARSE-2412697	631
	Cross-site Scripting (XSS) SNYK-JS-URIJS-2441239	591
	Improper Verification of Cryptographic Signature SNYK-JS-BROWSERIFYSIGN-6037026	589
	Prototype Pollution SNYK-JS-LOADERUTILS-3043105	589
	Regular Expression Denial of Service (ReDoS) SNYK-JS-PATHPARSE-1077067	586
	Open Redirect SNYK-JS-URIJS-1319803	586
	Open Redirect SNYK-JS-URIJS-2401466	586
	Improper Input Validation SNYK-JS-URIJS-2415026	586
	Open Redirect SNYK-JS-URIJS-2419067	586
	Open Redirect SNYK-JS-URLPARSE-1533425	586
	Prototype Pollution SNYK-JS-URIJS-1319806	579
	Prototype Pollution SNYK-JS-MINIMIST-2429795	506
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LOADERUTILS-3042992	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LOADERUTILS-3105943	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-MINIMATCH-3050818	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-UGLIFYJS-1727251	479

---

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:

🦉 Regular Expression Denial of Service (ReDoS)
🦉 Server-side Request Forgery (SSRF)
🦉 Prototype Pollution
🦉 More lessons are available in Snyk Learn

[codesandbox]

Review or Edit in CodeSandbox

Open the branch in Web Editor • VS Code • Insiders

Open Preview