chore(deps): bump vscode-languageserver-protocol from 3.18.3 to 3.18.4 (#527)

Bumps [vscode-languageserver-protocol](https://github.com/Microsoft/vscode-languageserver-node/tree/HEAD/protocol) from 3.18.3 to 3.18.4.
- [Release notes](https://github.com/Microsoft/vscode-languageserver-node/releases)
- [Commits](https://github.com/Microsoft/vscode-languageserver-node/commits/release/types/3.18.4/protocol)

---
updated-dependencies:
- dependency-name: vscode-languageserver-protocol
  dependency-version: 3.18.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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