Cargo update for security fixes (#1948)

## Description
- Update dhcproto to a new major version to bring in a newer
hickory-proto to fix a dependabot alert
- Update russh for dependabot alert
- General "cargo update" for everything else too

## Type of Change
- [ ] **Add** - New feature or capability
- [ ] **Change** - Changes in existing functionality  
- [ ] **Fix** - Bug fixes
- [ ] **Remove** - Removed features or deprecated functionality
- [X] **Internal** - Internal changes (refactoring, tests, docs, etc.)

## Related Issues (Optional)
https://github.com/NVIDIA/infra-controller/security/dependabot/62
https://github.com/NVIDIA/infra-controller/security/dependabot/76
https://github.com/NVIDIA/infra-controller/security/dependabot/77

## Breaking Changes
- [ ] This PR contains breaking changes

## Testing
- [ ] Unit tests added/updated
- [ ] Integration tests added/updated  
- [ ] Manual testing performed
- [X] No testing required (docs, internal refactor, etc.)

## Additional Notes

Author: kensimon