Fix openssl_dev_headers dep check to require the header

[liquidsec]

Closes #3272.

_core_dep_satisfied treated the openssl binary as evidence that the
OpenSSL dev headers were installed:

return any(Path(p).exists() for p in ["/usr/include/openssl/ssl.h", ...]) \
    or bool(self.parent_helper.which("openssl"))

Minimal images (e.g. python:3.11-slim) ship the openssl binary but
not libssl-dev, so the check returned True, the core-deps installer
skipped installing the headers, and source builds that compile against
libssl (medusa's ./configure) failed with:

configure: error:  *** OpenSSL header files required for SSL support. ***

Fix: require the actual header. libssl-dev / openssl-devel / etc.
are already in CORE_DEPS["openssl_dev_headers"] for every distro, so
once the check reports "not satisfied" they get installed as intended
and medusa (and any other source-built dep) compiles cleanly.

Reproduced on python:3.11-slim: with the fix, openssl_dev_headers
correctly reports unsatisfied and libssl-dev gets installed.

[github-actions]

📊 Performance Benchmark Report

Comparing dev (baseline) vs medusa-libssl-dep (current)

📈 Detailed Results (All Benchmarks)

📋 Complete results for all benchmarks - includes both significant and insignificant changes

🧪 Test Name	📏 Base	📏 Current	📈 Change	🎯 Status
Bloom Filter Dns Mutation Tracking Performance	4.40ms	4.33ms	-1.6% ⚪	✅
Bloom Filter Large Scale Dns Brute Force	18.79ms	18.22ms	-3.0% ⚪	✅
Large Closest Match Lookup	367.47ms	366.62ms	-0.2% ⚪	✅
Realistic Closest Match Workload	194.35ms	195.13ms	+0.4% ⚪	✅
Event Memory Medium Scan	1403 B/event	1402 B/event	-0.1% ⚪	✅
Event Memory Large Scan	1527 B/event	1527 B/event	+0.0% ⚪	✅
Event Validation Full Scan Startup Small Batch	406.13ms	405.62ms	-0.1% ⚪	✅
Event Validation Full Scan Startup Large Batch	542.03ms	540.47ms	-0.3% ⚪	✅
Make Event Autodetection Small	25.90ms	25.44ms	-1.8% ⚪	✅
Make Event Autodetection Large	265.64ms	259.99ms	-2.1% ⚪	✅
Make Event Explicit Types	11.66ms	11.26ms	-3.5% ⚪	✅
Excavate Single Thread Small	4.222s	4.198s	-0.6% ⚪	✅
Excavate Single Thread Large	10.072s	9.884s	-1.9% ⚪	✅
Excavate Parallel Tasks Small	4.369s	4.321s	-1.1% ⚪	✅
Excavate Parallel Tasks Large	6.521s	6.437s	-1.3% ⚪	✅
Intercept Throughput Small	893.96ms	881.04ms	-1.4% ⚪	✅
Intercept Throughput Medium	879.75ms	926.23ms	+5.3% ⚪	✅
Dns Throughput Quiet	2.870s	2.770s	-3.5% ⚪	✅
Dns Throughput Loaded	1.888s	2.004s	+6.1% ⚪	✅
Dns Throughput Inherited	2.456s	2.441s	-0.6% ⚪	✅
Is Ip Performance	2.29ms	2.33ms	+2.0% ⚪	✅
Make Ip Type Performance	230.42µs	225.90µs	-2.0% ⚪	✅
Mixed Ip Operations	2.39ms	2.40ms	+0.3% ⚪	✅
Memory Use Web Crawl	1.0 MB	1.0 MB	+0.0% ⚪	✅
Memory Use Subdomain Enum	28.3 MB	28.3 MB	-0.0% ⚪	✅
Memory Use Deep Chain	5.0 MB	5.0 MB	+0.0% ⚪	✅
Memory Use Parallel Chains	9.9 MB	13.7 MB	+37.6% 🔴🔴🔴	⚠️
Scan Throughput 100	2.850s	2.921s	+2.5% ⚪	✅
Scan Throughput 1000	21.023s	21.287s	+1.3% ⚪	✅
Typical Queue Shuffle	5.57µs	5.50µs	-1.3% ⚪	✅
Priority Queue Shuffle	26.14µs	26.40µs	+1.0% ⚪	✅

🎯 Performance Summary

! 1 regression ⚠️
  30 unchanged ✅

🔍 Significant Changes (>10%)

• Memory Use Parallel Chains: 37.6% 🐌 more memory

---

🐍 Python Version 3.11.15

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90%. Comparing base (42ef254) to head (0a83067).
⚠️ Report is 31 commits behind head on dev.

Additional details and impacted files

@@          Coverage Diff          @@
##             dev   #3282   +/-   ##
=====================================
+ Coverage     90%     90%   +1%     
=====================================
  Files        450     450           
  Lines      46100   46155   +55     
=====================================
+ Hits       41357   41409   +52     
- Misses      4743    4746    +3     

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