[Snyk] Security upgrade next from 10.2.3 to 12.0.8

[bahdcoder]

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 `npm` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - packages/next/package.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **658/1000**
**Why?** Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-SEMVER-3247795](https://snyk.io/vuln/SNYK-JS-SEMVER-3247795) | Yes | Proof of Concept (*) 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.

• d7a96d2 v12.0.8
• df0e899 v12.0.8-canary.22
• d291aa9 Refactor data fetching API docs (#30615)
• b6b7d85 Docs: correct ignorance pattern for .env.local (#32647)
• 36eba95 Fixes #33153: Updating cross-references from master to main + canary (#33198)
• 0de8447 v12.0.8-canary.21
• 57a8705 Add util for normalizing errors (#33159)
• 2d0fd34 Fix broken yarn pnp (#32867)
• 9836429 drop dynamic import with `ssr: false` on server-side (#32606)
• 600f113 next-swc: fix ssg code elimination when used in render (#32709)
• 5f4947e Add Caveats section to custom error page (#33160)
• 3eabb7f v12.0.8-canary.20
• 4aa9879 Allow dependencies to use environment variables in middlewares (#33141)
• f0ad19a use a separate webpack runtime for middleware (#33134)
• 8ae08b9 No info on environment variables in the src folder (#33110) (#33136)
• 213f5a4 docs: minor text-copy cleanup (#33120)
• 87dbd03 Update swc (#33063)
• 320986a Update next.config.js (#33091)
• 3861e4b Adding Asset Component for Rich Text Renderer (#32503)
• e5e04c9 Update using-mdx.md (#33077)
• aeb67cc v12.0.8-canary.19
• 6f5bfc1 Fix middleware at root in standalone mode (#33053)
• efabf81 Add util for generating new tests/error documents (#33001)
• 48c0bc8 Remove extra config from tailwind example (#33062)

See the full diff

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