Update tower-lsp-server requirement from 0.21.1 to 0.22.0 in the cargo group

[dependabot]

Updates the requirements on tower-lsp-server to permit the latest version.
Updates tower-lsp-server to 0.21.1

Release notes

Sourced from tower-lsp-server's releases.

v0.21.1

Changelog

Added

• Export UriExt to reduce development friction (#38)

Fixed

• Do no panic when recieving a response whose request has been cancelled (#37)
• Allow null param in JSON-RPC response when it should be None (#41)

New Contributors

• @​gmryuuko made their first contribution in tower-lsp-community/tower-lsp-server#41

Full Changelog: tower-lsp-community/tower-lsp-server@v0.21.0...v0.21.1

Changelog

Sourced from tower-lsp-server's changelog.

[0.21.1] - 2025-04-07

Added

• Export UriExt to reduce development friction (#38)

Fixed

• Do no panic when recieving a response whose request has been cancelled (#37)
• Allow null param in JSON-RPC response when it should be None (#41)

[0.21.0] - 2025-03-16

Added

• Add notebook support (#15).
  • Implement notebookDocument/didOpen server request.
  • Implement notebookDocument/didChange server request.
  • Implement notebookDocument/didSave server request.
  • Implement notebookDocument/didClose server request.

Changed

• Update lsp-types from 0.94.1 to 0.97 (#6).
• Bump minimum supported Rust version from 1.64.0 to 1.77.0.
• The LanguageServer trait now uses impl Trait in Trait feature (#21).
  • LanguageServer is not longer dyn-compatible/object-safe
  • You should be able to migrate from the old trait signature by just dropping the #[async_trait] macro at the top of the implementation.
• Correctly use lsp_types::LSPAny in public API instead of serde_json::Value (#10).

Fixed

• Use stream_select to avoid hanging behaviour (#9)
• Close transport 1s after exit notification instead of waiting for transport channel to close (#29)

Removed

• async_trait is no longer exported as it is no longer needed for the LanguageServer trait.

[0.20.0] - 2023-08-10

Versions 0.20 and below correspond to the original tower-lsp project.

Added

• Add support for pull-based diagnostics from LSP 3.17.0 (PR #396).
  • Implement textDocument/diagnostic server request.
  • Implement workspace/diagnostic server request.
  • Implement workspace/diagnostic/refresh client request.
• Implement std::str::FromStr for jsonrpc::{Request,Response} (PR #379).

... (truncated)

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