Chore(deps): Bump cratedb-toolkit from 0.0.15 to 0.0.21

Bumps [cratedb-toolkit](https://github.com/crate/cratedb-toolkit) from 0.0.15 to 0.0.21.
- [Release notes](https://github.com/crate/cratedb-toolkit/releases)
- [Changelog](https://github.com/crate/cratedb-toolkit/blob/main/CHANGES.md)
- [Commits](crate/cratedb-toolkit@v0.0.15...v0.0.21)

---
updated-dependencies:
- dependency-name: cratedb-toolkit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements-test.txt

@@ -1,5 +1,5 @@
 crash
-cratedb-toolkit==0.0.15
+cratedb-toolkit==0.0.21
 pueblo[proc]==0.0.9
 prometheus-api-client<0.6
 pytest<9