build(deps): bump golang.org/x/crypto from 0.1.0 to 0.12.0

[dependabot[bot]]

Bumps golang.org/x/crypto from 0.1.0 to 0.12.0.

Commits

• b4ddeed go.mod: update golang.org/x dependencies
• edc325d ssh: fix call to Fatalf from a non-test goroutine
• eab9315 ssh: add diffie-hellman-group16-sha512 kex
• ddfa821 ssh: ignore invalid MACs and KEXs just like we do for ciphers
• d08e19b x509roots/fallback: update bundle
• 12e1fcd internal/wycheproof: skip all tests in short test mode
• 3f8f064 ssh: prefer sha256 based RSA key algorithms
• 5df3b59 ssh: disable client agent tests on Windows
• 2e82bdd fix TestValidTerminalMode: missing output from echo SHELL $SHELL
• 64e0e99 ssh: fix RSA certificate and public key authentication with older clients
• Additional commits viewable in compare view

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