fix(vscode): update vscode engine version to 1.96.0 (#2562)

<!--
  How to write a good PR title:
- Follow [the Conventional Commits
specification](https://www.conventionalcommits.org/en/v1.0.0/).
  - Give as much context as necessary and as little as possible
  - Prefix it with [WIP] while it’s a work in progress
-->

## Self Checklist

- [x] I wrote a PR title in **English** and added an appropriate
**label** to the PR.
- [x] I wrote the commit message in **English** and to follow [**the
Conventional Commits
specification**](https://www.conventionalcommits.org/en/v1.0.0/).
- [x] I [added the
**changeset**](https://github.com/changesets/changesets/blob/main/docs/adding-a-changeset.md)
about the changes that needed to be released. (or didn't have to)
- [x] I wrote or updated **documentation** related to the changes. (or
didn't have to)
- [x] I wrote or updated **tests** related to the changes. (or didn't
have to)
- [x] I tested the changes in various browsers. (or didn't have to)
  - Windows: Chrome, Edge, (Optional) Firefox
  - macOS: Chrome, Edge, Safari, (Optional) Firefox

## Related Issue

<!-- Please link to issue if one exists -->

<!-- Fixes #0000 -->

## Summary

<!-- Please brief explanation of the changes made -->


https://github.com/channel-io/bezier-react/actions/runs/12310900865/job/34360202023

```bash
Error: @types/vscode ^1.96.0 greater than engines.vscode ^1.75.0. Consider upgrade engines.vscode or use an older @types/vscode version
Error: Process completed with exit code 1.
```

위 에러를 수정합니다.

## Details

<!-- Please elaborate description of the changes -->

상위 버전 명시

### Breaking change? (Yes/No)

<!-- If Yes, please describe the impact and migration path for users -->

No

## References

<!-- Please list any other resources or points the reviewer should be
aware of -->

-
https://code.visualstudio.com/api/working-with-extensions/publishing-extension#visual-studio-code-compatibility

Author: sungik-choi

packages/bezier-vscode/package.json

@@ -20,7 +20,7 @@
     "extension"
   ],
   "engines": {
-    "vscode": "^1.75.0"
+    "vscode": "^1.96.0"
   },
   "activationEvents": [
     "onLanguage:typescript",