chore(deps): bump isomorphic-git from 1.25.2 to 1.25.6

Bumps [isomorphic-git](https://github.com/isomorphic-git/isomorphic-git) from 1.25.2 to 1.25.6.
- [Release notes](https://github.com/isomorphic-git/isomorphic-git/releases)
- [Changelog](https://github.com/isomorphic-git/isomorphic-git/blob/main/docs/in-the-news.md)
- [Commits](isomorphic-git/isomorphic-git@v1.25.2...v1.25.6)

---
updated-dependencies:
- dependency-name: isomorphic-git
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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