Update bitfield-struct requirement from 0.8.0 to 0.9.0 #2083

Job	Run time
Dependency Graph (assets/depgraph.svg)	26s
Typos	7s
Build Extractor	1m 18s
Unused Dependencies	4m 21s
Clippy	4m 37s
Formatting	30s
Documentation	4m 0s
Miri Tests	4m 54s
Tests (windows-latest)	22m 6s
Tests (macos-latest)	13m 10s
Tests (ubuntu-latest)	14m 46s
	1h 10m 15s

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