Bump rich-argparse from 1.4.0 to 1.5.1 in /.github/dependabot

Bumps [rich-argparse](https://github.com/hamdanal/rich-argparse) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/hamdanal/rich-argparse/releases)
- [Changelog](https://github.com/hamdanal/rich-argparse/blob/main/CHANGELOG.md)
- [Commits](hamdanal/rich-argparse@v1.4.0...v1.5.1)

---
updated-dependencies:
- dependency-name: rich-argparse
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/dependabot/constraints.txt

@@ -2,4 +2,4 @@ appdirs==1.4.4
 bash_kernel==0.9.3
 ipykernel==6.29.3
 rich==13.7.1
-rich-argparse==1.4.0
+rich-argparse==1.5.1