chore: bump legacy workspace to 0.16.0 #648

Job	Run time
rust-library-base / Feature Checks	1m 28s
rust-library-base / Base Checks / Test Suite	3m 9s
rust-library-base / Base Checks / Docs	4m 21s
rust-library-base / Base Checks / Rustfmt	34s
rust-library-base / Base Checks / doctest	1m 37s
rust-library-base / Base Checks / Clippy	4m 11s
	15m 20s

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