Update dependencies

[jakebailey]

Updates a bunch of stuff across the board. Fixes the form-data npm audit too.

[Copilot]

Pull Request Overview

This is a routine dependency update PR that updates various development and build tools across multiple configuration files to their latest versions.

• Updates Go module dependencies including experimental JSON library and standard library packages
• Updates Node.js development dependencies for the main project and VS Code extension
• Updates development tools including dprint formatter, TypeScript plugin, and golangci-lint

Reviewed Changes

Copilot reviewed 7 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Updates dprint formatter from v0.50.0 to v0.50.1
go.mod	Updates Go dependencies including experimental JSON library and golang.org/x packages
_tools/go.mod	Updates Go tooling dependencies for linting and module management
_extension/package.json	Updates VS Code extension build tools (vsce and esbuild)
NOTICE.txt	Updates license notices to reflect new dependency versions
.dprint.jsonc	Updates TypeScript formatting plugin from v0.95.7 to v0.95.8
.custom-gcl.yml	Updates golangci-lint version from v2.0.2 to v2.3.0