fix: update vulnerable dependencies

[vivekanand1101]

Summary

• Update patched releases of Vite 6 and 7, Vitest, esbuild, PostCSS, Babel, Immutable, brace-expansion, js-yaml, fast-uri, ws, SVGO, and YAML.
• Preserve each dependency's currently resolved major version.
• Regenerate yarn.lock with patched transitive versions.

This addresses all 15 currently open Dependabot alerts without a major-version migration.

Verification

• yarn install --frozen-lockfile --ignore-scripts
• yarn build — passed
• yarn lint — typecheck and ESLint passed
• yarn test --run — Vitest reports that the repository currently contains no test files

Additional note

yarn audit still reports a pre-existing moderate AJV advisory under vite-plugin-dts/API Extractor. It is not one of the repository's current Dependabot alerts and its nested versions are not affected by selective Yarn resolutions without forcing incompatible dependency majors.