deny.toml: Update for advisories and licenses stanzas to version 2

[xv-ian-c]

Several fields were deprecated and causing warnings, out settings match the new default behaviour anyway.

See EmbarkStudios/cargo-deny#611 for more.

[github-actions]

Code coverage summary for f324a7f:

Filename                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
wolfssl-sys/src/lib.rs              7                 0   100.00%           4                 0   100.00%          26                 0   100.00%           0                 0         -
wolfssl/src/callback.rs             2                 2     0.00%           1                 1     0.00%           1                 1     0.00%           0                 0         -
wolfssl/src/context.rs            173                86    50.29%          52                16    69.23%         342               126    63.16%           0                 0         -
wolfssl/src/error.rs               21                 7    66.67%          12                 4    66.67%          49                 5    89.80%           0                 0         -
wolfssl/src/lib.rs                 64                16    75.00%          18                 6    66.67%          78                15    80.77%           0                 0         -
wolfssl/src/rng.rs                 20                 5    75.00%           5                 0   100.00%          48                 3    93.75%           0                 0         -
wolfssl/src/ssl.rs                467               204    56.32%          84                24    71.43%        1051               275    73.83%           0                 0         -
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                             754               320    57.56%         176                51    71.02%        1595               425    73.35%           0                 0         -

✅ Region coverage 57% passes
✅ Line coverage 73% passes