Bump feldera from d16c788 to 115b3c6

Bumps [feldera](https://github.com/feldera/feldera) from `d16c788` to `115b3c6`.
- [Release notes](https://github.com/feldera/feldera/releases)
- [Commits](feldera/feldera@d16c788...115b3c6)

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

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