[Snyk] Security upgrade next from 10.2.0 to 12.1.0

[snyk-bot]

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

Changes included in this PR

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

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	581/1000 Why? Recently disclosed, Has a fix available, CVSS 5.9	User Interface (UI) Misrepresentation of Critical Information SNYK-JS-NEXT-2405694	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: next

The new version differs by 250 commits.

• 8545fd1 v12.1.0
• 1605f30 v12.0.11-canary.21
• 69aedbd Fix typo (#34480)
• f0f322c Remove deprecation for relative URL usage in middlewares (#34461)
• d4d79b2 Fix chunk buffering for server components (#34474)
• 74fa4d4 update webpack (#34477)
• b70397e Revert "Allow reading request bodies in middlewares (#34294)" (#34479)
• 4202011 Update font-optimization test snapshot (#34478)
• 1edd851 Allow reading request bodies in middlewares (#34294)
• ba78437 fix: don't wrap `profile` in firebase example (#34457)
• f3c3810 Remove hello world RSC example. (#34456)
• 49da8c0 v12.0.11-canary.20
• 2264d35 Fix `.svg` image optimization with a `loader` prop (#34452)
• 59714db Update server-only changes HMR handling (#34298)
• d288d43 Update MDX Guide config example (#34405)
• 54dbeb3 update webpack (#34444)
• 9b38ffe Update 2.example_bug_report.yml
• 86aac3f Update 1.bug_report.yml
• 732b405 v12.0.11-canary.19
• 01524ef Revert swc css bump temporarily (#34440)
• 8a55612 Add image config for `dangerouslyAllowSVG` and `contentSecurityPolicy` (#34431)
• 9639fe7 Ensure we don't poll page in development when notFound: true is returned (#34352)
• 7e93a89 Update 2.example_bug_report.yml
• d88793d feat: improve opening a new issue flow (#34434)

See the full diff

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