gh-35555: update eclib to version 20230424
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### :books: Description
Should fix #35535 by updating eclib. The new version avoids using the
template complex<T> class with T=NTL's RR, which caused problems with
newer compilers, and instead implements its own bigcomplex class.
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### :hourglass: Dependencies
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URL: https://github.com/sagemath/sage/pull/35555
Reported by: John Cremona
Reviewer(s):
Committer
Release Manager
