build(deps): update blake2 requirement from 0.9 to 0.10

[dependabot[bot]]

Updates the requirements on blake2 to permit the latest version.

Commits

• 75298d3 update crates to digest v0.10 (#217)
• d6c8c3c Remove some unsafe (#320)
• a7431da release sha2 v0.9.8 (#318)
• 93d895d sha2: Fix bug in the AVX2 backend (#314)
• 726e3c3 Release sha2 v0.9.7 (#313)
• efda00d Add x86 intrinsics support for sha2-512 (#312)
• 4a2845c sha2 v0.9.6 (#308)
• 876fdc1 sha-1 v0.9.8 (#307)
• 8288805 build(deps): bump cpufeatures from 0.1.5 to 0.2.1 (#306)
• 7ad6a68 blake2 v0.9.2 (#305)
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like blake2 is no longer a dependency, so this is no longer needed.