build(deps): bump @project-serum/anchor from 0.24.2 to 0.26.0

Bumps [@project-serum/anchor](https://github.com/coral-xyz/anchor) from 0.24.2 to 0.26.0.
- [Release notes](https://github.com/coral-xyz/anchor/releases)
- [Changelog](https://github.com/coral-xyz/anchor/blob/master/CHANGELOG.md)
- [Commits](coral-xyz/anchor@v0.24.2...v0.26.0)

---
updated-dependencies:
- dependency-name: "@project-serum/anchor"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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