Update rand

[maurges]

Make two commits: updating rand to 0.9 and to 0.10. From these commits, we can create two tags to release.

Blocked on survived/rand_dev#5

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	rand@​0.8.5 ⏵ 0.10.1	+1	+1
	rand_core@​0.6.4 ⏵ 0.10.1
	rand_dev@​0.1.1 ⏵ 0.3.0			+4

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