Update deny config

[djc]

cargo-deny got updated and changed some configuration stuff:

djc-2021 main webpki $ cargo deny check licenses
error[deprecated]: this key has been removed, see https://github.com/EmbarkStudios/cargo-deny/pull/611 for migration information
  ┌─ /Users/djc/src/webpki/deny.toml:2:1
  │
2 │ unmaintained = "deny"
  │ ━━━━━━━━━━━━

error[deprecated]: this key has been removed, see https://github.com/EmbarkStudios/cargo-deny/pull/611 for migration information
  ┌─ /Users/djc/src/webpki/deny.toml:4:1
  │
4 │ notice = "deny"
  │ ━━━━━━

2024-08-03 15:03:31 [ERROR] failed to validate configuration file /Users/djc/src/webpki/deny.toml

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.30%. Comparing base (1414bf4) to head (2e1f2f5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #277   +/-   ##
=======================================
  Coverage   97.30%   97.30%           
=======================================
  Files          19       19           
  Lines        4237     4237           
=======================================
  Hits         4123     4123           
  Misses        114      114           

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[cpu]

Thanks! The [advisories] section changes LGTM. I think the [licenses] change is probably OK too, but wanted to make sure.

[ctz]

Didn't realise we had cargo-deny going here -- I guess it's a carry over from the original version. Note the "We don't maintain a fixed Cargo.lock so enforcing ..." comment near the bottom of this file is now obsolete.

[djc]

Didn't realise we had cargo-deny going here -- I guess it's a carry over from the original version.

Yup, it was first added by Brian in December of 2020.

Note the "We don't maintain a fixed Cargo.lock so enforcing ..." comment near the bottom of this file is now obsolete.

Removed the comment and flipped the setting to multipe-versions = "false".