Update dependency finalhandler to v2 (#1185)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [finalhandler](https://redirect.github.com/pillarjs/finalhandler) |
[`1.3.1` ->
`2.1.0`](https://renovatebot.com/diffs/npm/finalhandler/1.3.1/2.1.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/finalhandler/2.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/finalhandler/2.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/finalhandler/1.3.1/2.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/finalhandler/1.3.1/2.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>pillarjs/finalhandler (finalhandler)</summary>

###
[`v2.1.0`](https://redirect.github.com/pillarjs/finalhandler/blob/HEAD/HISTORY.md#v210--2025-03-05)

[Compare
Source](https://redirect.github.com/pillarjs/finalhandler/compare/v2.0.0...v2.1.0)

\==================

-   deps:
    -   use caret notation for dependency versions
    -   encodeurl@^2.0.0
    -   debug@^4.4.0
-   remove `ServerResponse.headersSent` support check
-   remove setImmediate support check
-   update test dependencies
-   remove unnecessary devDependency `safe-buffer`
-   remove `unpipe` package and use native `unpipe()` method
-   remove unnecessary devDependency `readable-stream`
-   refactor: use object spread to copy error headers
-   refactor: use replaceAll instead of replace with a regex
- refactor: replace setHeaders function with optimized inline header
setting

###
[`v2.0.0`](https://redirect.github.com/pillarjs/finalhandler/blob/HEAD/HISTORY.md#v200--2024-09-02)

[Compare
Source](https://redirect.github.com/pillarjs/finalhandler/compare/v1.3.1...v2.0.0)

\==================

-   drop support for node <18
- ignore status message for HTTP/2
([#&#8203;53](https://redirect.github.com/pillarjs/finalhandler/issues/53))

</details>

---

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package-lock.json

@@ -68,7 +68,7 @@
     "@types/finalhandler": "1.2.3",
     "@vitest/coverage-v8": "^3.0.0",
     "express": "4.21.2",
-    "finalhandler": "1.3.1",
+    "finalhandler": "2.1.0",
     "husky": "9.1.7",
     "msw": "2.7.3",
     "prettier": "3.5.3",