fix: add openssl-dev to benchmark container env

[scottgerring]

Fixes the benchmark suite. At some point we've made it depend on openssl-dev, but haven't added the dep to the container env.

Changes

Please provide a brief description of the changes here.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.7%. Comparing base (69c62b1) to head (ea63e6b).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #3401   +/-   ##
=====================================
  Coverage   82.7%   82.7%           
=====================================
  Files        128     128           
  Lines      24811   24811           
=====================================
  Hits       20526   20526           
  Misses      4285    4285           

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[lalitb]

LGTM. Hopefully, this is the dev dependency - otherwise we should be using the rustls for TLS handshake.