fix(git-changelog): declare vite peer dependency - #632

Fixes #617.

The git changelog package imports Vite from its published Vite entrypoint, including runtime normalizePath from vite. With VitePress 2 alpha, consumers can hit Cannot find package 'vite' when the plugin is installed without an explicit Vite dependency in the consuming project.

This adds vite as a peer dependency using the existing catalog version and syncs the lockfile importer entry.

Verification:

• Confirmed packages/vitepress-plugin-git-changelog/src/vite/git.ts imports runtime normalizePath from vite.
• Confirmed package metadata now declares peerDependencies.vite alongside vitepress.
• pnpm install --lockfile-only --offline could not complete in my partial API checkout because the trimmed workspace did not include @nolebase/ui; no source or generated files were changed beyond package metadata/lock importer sync.