Update spaln to 3.0.5b

[mencian]

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[martin-g]

The OSX build fails with make: *** No rule to make target 'libz.a', needed by 'spaln'. Stop.�[0m
We may wait a bit for a new release/tag of Spaln. At ogotoh/spaln#67 we were discussing and testing fixes for Linux/Mac ARM64 and in the Makefile too. Latest master builds fine on Linux ARM64 now.

[mencian]

Closing in favor of #47896.