Change cipher suite priority to match what rustls uses for ring & aws-lc

[brian-pane]

• Prefer AES-128 over AES-256
• Prefer ECDSA signatures over RSA

[codspeed-hq]

Merging this PR will not alter performance

✅ 155 untouched benchmarks

---

_{Comparing brian-pane:aes128 (07d03e0) with main (d49db59)}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.76%. Comparing base (d49db59) to head (07d03e0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #157   +/-   ##
=======================================
  Coverage   99.76%   99.76%           
=======================================
  Files         184      184           
  Lines       50793    50793           
=======================================
  Hits        50673    50673           
  Misses        120      120           

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[ctz]

Reference: rustls/rustls#2849

Thanks!