Release: Bump prime cli to 0.5.43

[JannikSt]

Changes since v0.5.42:

• Add compute_size infrastructure config support (Add compute_size support to CLI #415)
• Streamline backend help (streamline backend help #413)

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Note

Low Risk
Version-string only change with no functional code modifications.

Overview
Bumps the prime_cli package version from 0.5.42 to 0.5.43 in packages/prime/src/prime_cli/__init__.py for the next release.

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