chore(deps): update dependency @lezer/highlight to v1.2.3 (#2240)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [@lezer/highlight](https://redirect.github.com/lezer-parser/highlight)
| [`1.2.1` ->
`1.2.3`](https://renovatebot.com/diffs/npm/@lezer%2fhighlight/1.2.1/1.2.3)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@lezer%2fhighlight/1.2.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@lezer%2fhighlight/1.2.1/1.2.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>lezer-parser/highlight (@&#8203;lezer/highlight)</summary>

###
[`v1.2.3`](https://redirect.github.com/lezer-parser/highlight/blob/HEAD/CHANGELOG.md#123-2025-10-26)

[Compare
Source](https://redirect.github.com/lezer-parser/highlight/compare/1.2.2...1.2.3)

##### Bug fixes

Fix a regression in 1.2.2 when assigning new highlight tags to nodes.

###
[`v1.2.2`](https://redirect.github.com/lezer-parser/highlight/blob/HEAD/CHANGELOG.md#122-2025-10-17)

[Compare
Source](https://redirect.github.com/lezer-parser/highlight/compare/1.2.1...1.2.2)

##### Bug fixes

Fix an issue where adding additional highlighting info for a node that
already had some rule would drop the old info.

</details>

---

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package.json

@@ -144,7 +144,7 @@
       "sharp"
     ],
     "overrides": {
-      "@lezer/highlight": "1.2.1",
+      "@lezer/highlight": "1.2.3",
       "@lezer/common": "1.2.3",
       "@codemirror/autocomplete": "6.18.6",
       "@codemirror/commands": "6.3.3",