RUSTSEC-2021-0060: merged into the `aes` crate

[github-actions]

merged into the aes crate

Details
Status	unmaintained
Package	aes-soft
Version	0.4.0
URL	RustCrypto/block-ciphers#200
Date	2021-04-29

The aes-soft crate has been merged into the aes crate. The new repository
location is at:

<https://github.com/RustCrypto/block-ciphers/tree/master/aes>

AES-NI is now autodetected at runtime on i686/x86-64 platforms.
If AES-NI is not present, the aes crate will fallback to a constant-time
portable software implementation.

To force the use of a constant-time portable implementation on these platforms,
even if AES-NI is available, use the new force-soft feature of the aes
crate to disable autodetection.

See advisory page for additional details.