[Snyk] Security upgrade react-native from 0.62.2 to 0.64.0

[shanhuiyang]

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

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • client/package.json
  • client/yarn.lock

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	519/1000 Why? Has a fix available, CVSS 6.1	Cross-site Scripting (XSS) SNYK-JS-HERMESENGINE-1015406	No	No Known Exploit
	539/1000 Why? Has a fix available, CVSS 6.5	Prototype Pollution SNYK-JS-HERMESENGINE-608850	No	No Known Exploit
	544/1000 Why? Has a fix available, CVSS 6.6	Denial of Service (DoS) SNYK-JS-HERMESENGINE-629268	No	No Known Exploit
	544/1000 Why? Has a fix available, CVSS 6.6	Out-of-Bounds SNYK-JS-HERMESENGINE-629748	No	No Known Exploit
	544/1000 Why? Has a fix available, CVSS 6.6	Denial of Service (DoS) SNYK-JS-HERMESENGINE-629766	No	No Known Exploit
	520/1000 Why? Has a fix available, CVSS 5.9	Denial of Service SNYK-JS-NODEFETCH-674311	No	No Known Exploit

(*) 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.

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