ci: use product-specific Signet Forge license secret #77

Job	Run time
Server Codecs (Ubuntu)	4m 46s
Full Suite 394/394 (Ubuntu)	4m 53s
ASan + UBSan (Ubuntu)	4m 26s
TSan (Ubuntu)	3m 23s
Build & Test (Windows / MSVC)	5m 6s
Fuzz (Ubuntu, Clang-18)	17m 18s
Build & Test (ubuntu-24.04)	3m 36s
Python SAST (bandit)	9s
Coverage (Ubuntu, Clang-18)	3m 36s
Build & Test (macos-14)	2m 27s
Benchmark Registry	6s
Mutation Testing Baseline (Ubuntu)	2m 22s
Post-Quantum PQ (Ubuntu)	4m 26s
License Compliance	1m 42s
Secrets Scan (gitleaks)	7s
UBSan (Ubuntu)	2m 33s
Benchmarks (Ubuntu)	2m 21s
	1h 3m 17s

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