chore(deps): update dependency @adobe/eslint-config-helix to v3.0.21 (#1374)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
|
[@adobe/eslint-config-helix](https://redirect.github.com/adobe/helix-eslint-config)
| [`3.0.19` →
`3.0.21`](https://renovatebot.com/diffs/npm/@adobe%2feslint-config-helix/3.0.19/3.0.21)
|
![age](https://developer.mend.io/api/mc/badges/age/npm/@adobe%2feslint-config-helix/3.0.21?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@adobe%2feslint-config-helix/3.0.19/3.0.21?slim=true)
|

---

### Release Notes

<details>
<summary>adobe/helix-eslint-config
(@&#8203;adobe/eslint-config-helix)</summary>

###
[`v3.0.21`](https://redirect.github.com/adobe/helix-eslint-config/blob/HEAD/CHANGELOG.md#3021-2026-02-24)

[Compare
Source](https://redirect.github.com/adobe/helix-eslint-config/compare/v3.0.20...v3.0.21)

##### Bug Fixes

- revert allowing ESLint v10 (eslint-plugin-import still requires v9 or
smaller)
([b883f4b](https://redirect.github.com/adobe/helix-eslint-config/commit/b883f4b4b32d1d5550b09265d949c8d4dc65f747))

###
[`v3.0.20`](https://redirect.github.com/adobe/helix-eslint-config/blob/HEAD/CHANGELOG.md#3020-2026-02-24)

[Compare
Source](https://redirect.github.com/adobe/helix-eslint-config/compare/v3.0.19...v3.0.20)

##### Bug Fixes

- **deps:** allow eslint 9 *and* 10
([#&#8203;255](https://redirect.github.com/adobe/helix-eslint-config/issues/255))
([6219521](https://redirect.github.com/adobe/helix-eslint-config/commit/6219521c618aee271f73f7305cc4a241b8ea3c3c))

</details>

---

### Configuration

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

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

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

---

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

---

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package-lock.json

@@ -32,7 +32,7 @@
     "./packages/*"
   ],
   "devDependencies": {
-    "@adobe/eslint-config-helix": "3.0.19",
+    "@adobe/eslint-config-helix": "3.0.21",
     "@babel/core": "7.28.5",
     "@babel/eslint-parser": "7.28.5",
     "@babel/plugin-syntax-import-assertions": "7.27.1",