build: update to fix vulnerabilities

[tembleking]

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[Copilot]

Pull request overview

This PR updates Go module dependencies and Nix inputs/base images to address reported vulnerabilities, ensuring the project builds with refreshed upstream components in both Go and Nix-based packaging.

Changes:

• Bumped Go dependencies (notably github.com/mark3labs/mcp-go and github.com/oapi-codegen/runtime) and refreshed indirect golang.org/x/* modules.
• Updated Nix packaging/vendor hash to match the new Go dependency set.
• Refreshed Nix flake inputs and updated the pinned base container image digests/hashes for amd64 and aarch64.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.nix	Updates vendorHash to match the new Go vendor/dependency graph.
go.mod	Bumps direct and indirect Go module versions to newer releases.
go.sum	Updates module checksums to align with the dependency upgrades.
flake.lock	Advances pinned nixpkgs revisions/hashes used by the flake.
docker-base-amd64.nix	Updates pinned base image digest/hash for amd64 builds.
docker-base-aarch64.nix	Updates pinned base image digest/hash for aarch64 builds.

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