[Snyk] Security upgrade next from 9.5.5 to 10.2.0

[thomascraig]

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: - package.json

⚠️ Warning

``` Failed to update the package-lock.json, please update manually before merging. ```

#### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **551/1000**
**Why?** Recently disclosed, Has a fix available, CVSS 5.3 | Improper Input Validation
[SNYK-JS-POSTCSS-5926692](https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692) | 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.

• 6b97bce v10.2.0
• 0abbb75 v10.1.4-canary.18
• b26077b Upgrade postcss (#24546)
• 53c19ff Test fixes for Babel mode (#24312)
• f3d5183 Remove experimental note for has routes (#24529)
• 5de5e49 feat: bump styled-components lib version examples (#24482)
• 0f2bd4f v10.1.4-canary.17
• efa58ef Ensure stalled CSS triggers fallback navigation (#24488)
• fff183c Font optimization bug fix (#24162)
• fc53879 Fix: Object Destructuring Error (#24397)
• cac9ccf Ensure proxy rewrite does not hang on error (#24394)
• cf4ba8d Upgrade eslint to the latest version (#24377)
• 08ee60d [next] update initial config message (#23165)
• a6ba432 Now -> Vercel in api-routes-rest (#24431)
• 29402f3 Replace experimental `reactMode` with `reactRoot` (#24280)
• 2743a74 v10.1.4-canary.16
• a9d2f2f Update 3.feature_request.yml
• f904615 Update 2.example_bug_report.yml
• 4aa0ba7 Update 1.bug_report.yml
• 40216be Workaround for discrete passive effects change (#24369)
• 079c629 experimental: remove legacy plugin system (#20759)
• cce82cd Fix side effects in router-is-ready tests (#24360)
• 1e9f459 v10.1.4-canary.15
• 6cd1c87 Fix not exposing server errors in hot reloader (#24331)

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project. ------------ **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](https://app.snyk.io/org/thomascraig/project/684104f0-5964-44e1-bb88-4a0a27bde4bf?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/thomascraig/project/684104f0-5964-44e1-bb88-4a0a27bde4bf?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"8e53f5af-e03b-4423-9588-dad716bd378e","prPublicId":"8e53f5af-e03b-4423-9588-dad716bd378e","dependencies":[{"name":"next","from":"9.5.5","to":"10.2.0"}],"packageManager":"npm","projectPublicId":"684104f0-5964-44e1-bb88-4a0a27bde4bf","projectUrl":"https://app.snyk.io/org/thomascraig/project/684104f0-5964-44e1-bb88-4a0a27bde4bf?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-POSTCSS-5926692"],"upgrade":["SNYK-JS-POSTCSS-5926692"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","pr-warning-shown","priorityScore"],"priorityScoreList":[551],"remediationStrategy":"vuln"}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Improper Input Validation](https://learn.snyk.io/lesson/improper-input-validation/?loc=fix-pr)