Bump github.com/grafana/loki/v3 in /wasp

Bumps [github.com/grafana/loki/v3](https://github.com/grafana/loki) from 3.0.0-20250221202516-b37eefe24f82 to 3.6.3.
- [Release notes](https://github.com/grafana/loki/releases)
- [Changelog](https://github.com/grafana/loki/blob/main/CHANGELOG.md)
- [Commits](https://github.com/grafana/loki/commits/v3.6.3)

---
updated-dependencies:
- dependency-name: github.com/grafana/loki/v3
  dependency-version: 3.6.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]