Update dependency cssnano-preset-default to v7 (#2084)

[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [cssnano-preset-default](https://togithub.com/cssnano/cssnano) | [`7.0.1` -> `7.0.2`](https://renovatebot.com/diffs/npm/cssnano-preset-default/6.1.2/7.0.2) | [![age](https://developer.mend.io/api/mc/badges/age/npm/cssnano-preset-default/7.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/cssnano-preset-default/7.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/cssnano-preset-default/6.1.2/7.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/cssnano-preset-default/6.1.2/7.0.2?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>cssnano/cssnano (cssnano-preset-default)</summary>

### [`v7.0.2`](https://togithub.com/cssnano/cssnano/releases/tag/cssnano%407.0.2): v7.0.2

[Compare Source](https://togithub.com/cssnano/cssnano/compare/cssnano-preset-default@7.0.1...cssnano-preset-default@7.0.2)

##### Bug Fixes

-   fix invalid output in some cases where selectors contain comments

### [`v7.0.1`](https://togithub.com/cssnano/cssnano/releases/tag/cssnano%407.0.1): v7.0.1

[Compare Source](https://togithub.com/cssnano/cssnano/compare/cssnano-preset-default@7.0.0...cssnano-preset-default@7.0.1)

#### Patch changes

Update postcss-calc dependency to latest version

### [`v7.0.0`](https://togithub.com/cssnano/cssnano/releases/tag/cssnano%407.0.0): v7.0.0

[Compare Source](https://togithub.com/cssnano/cssnano/compare/cssnano-preset-default@6.1.2...cssnano-preset-default@7.0.0)

#### Breaking changes

This release drops official support for unmaintained long term support Node.js releases 14 and 16. It also drops support for non-long term support releases 19 and 21 and add support for Node.js 22. Only the `package.json`  `engines` field has been updated. The code should otherwise be identical to the previous 6.1.2 release.

Ensuring support for  older Node.js had become difficult as the GitHub actions runners are not available for the latest MacOS and recent pnpm also could not run on CI any more.

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/X-oss-byte/Nextjs).

packages/next/package.json

@@ -220,7 +220,7 @@
     "cross-spawn": "7.0.3",
     "crypto-browserify": "3.12.0",
     "css.escape": "1.5.1",
-    "cssnano-preset-default": "7.0.1",
+    "cssnano-preset-default": "7.0.2",
     "data-uri-to-buffer": "6.0.2",
     "debug": "4.3.5",
     "devalue": "4.3.3",