chore: update dependencies 2026-04-03

[tembleking]

Automated dependency update

[Copilot]

Pull request overview

This pull request performs an automated dependency update dated April 3, 2026. It updates Go module dependencies, the Nix package vendorHash, and the nixpkgs flake lock reference. The changes include version bumps for key dependencies like mark3labs/mcp-go and oapi-codegen/runtime, while removing several transitive dependencies that are no longer needed and adding google/jsonschema-go as a new transitive dependency.

Changes:

• Updated mark3labs/mcp-go from v0.45.0 to v0.46.0 and oapi-codegen/runtime from v1.3.0 to v1.3.1 in go.mod
• Removed unused transitive dependencies and added google/jsonschema-go v0.4.2
• Updated vendorHash in package.nix to reflect dependency changes
• Updated nixpkgs to a more recent commit in flake.lock

Reviewed changes

Copilot reviewed 2 out of 4 changed files in this pull request and generated no comments.

File	Description
go.mod	Updated direct dependency versions and removed/added indirect dependencies
go.sum	Updated checksum hashes for all modified and removed dependencies
package.nix	Updated vendorHash to match the new go.mod/go.sum state
flake.lock	Updated nixpkgs to a more recent version

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