Merge pull request #1150 from googlefonts/glyph-determinism #2979

Job	Run time
fontbe tests	54s
Rustfmt	1m 14s
Clippy lints	1m 40s
fontc tests	1m 19s
cargo test fea-rs	1m 10s
cargo check no std	1m 37s
tests other than fontbe,fontc	2m 18s
Build GS and check the result	3m 16s
resources/scripts/ots_test.sh	1m 13s
	14m 41s

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