Bump rupicola from 941374a to f15661d

Bumps [rupicola](https://github.com/mit-plv/rupicola) from `941374a` to `f15661d`.
- [Release notes](https://github.com/mit-plv/rupicola/releases)
- [Commits](mit-plv/rupicola@941374a...f15661d)

---
updated-dependencies:
- dependency-name: rupicola
  dependency-type: direct:production
...

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