chore!: Revert opentelemetry bump with Jaeger removal

[sbernauer]

Description

In #830 the Jaeger TracingTarget was removed (as we though it's not used), so that we can bump the opentelemetry crates.
However, some concerns where raised, so we revert the bump and will re-visit it later

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

# Author
- [ ] Changes are OpenShift compatible
- [ ] CRD changes approved
- [ ] Integration tests passed (for non trivial changes)

# Reviewer
- [ ] Code contains useful comments
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added

[nightkr]

Probably want to remove the stale changelog entry too

[sbernauer]

Sorry, what entry are you referring to?

[sbernauer]

The one added in #830 get's removed here

[nightkr]

Right, my bad. I was looking for the top-level CHANGELOG.md.