Bump esbuild and esbuild-loader in /packages/pyright

Bumps [esbuild](https://github.com/evanw/esbuild) to 0.25.3 and updates ancestor dependency [esbuild-loader](https://github.com/privatenumber/esbuild-loader). These dependencies need to be updated together.


Updates `esbuild` from 0.19.12 to 0.25.3
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2024.md)
- [Commits](evanw/esbuild@v0.19.12...v0.25.3)

Updates `esbuild-loader` from 3.2.0 to 4.3.0
- [Release notes](https://github.com/privatenumber/esbuild-loader/releases)
- [Commits](privatenumber/esbuild-loader@v3.2.0...v4.3.0)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.25.3
  dependency-type: indirect
- dependency-name: esbuild-loader
  dependency-version: 4.3.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]