build(deps): bump org.checkerframework from 54915bc to 26c6857 (#10)

Bumps [org.checkerframework](https://github.com/typetools/checker-framework) from `54915bc` to `26c6857`.
- [Release notes](https://github.com/typetools/checker-framework/releases)
- [Commits](typetools/checker-framework@54915bc...26c6857)

---
updated-dependencies:
- dependency-name: org.checkerframework
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>