perf: Add new perf and boot results to PERFORMANCE.md

Author: skupriienko

PERFORMANCE.md

@@ -25,7 +25,22 @@ We implemented `__slots__` across the core `Client`, `Config`, and `Endpoint` cl
 
 ______________________________________________________________________
 
-## Benchmarks (v1.5.1 vs. v1.6.0 Refactor)
+## Benchmarks
+
+### v1.6.0 vs. v1.7.0
+
+We deliberately traded a fractional increase in execution time to introduce robust OWASP security guardrails (SSRF prevention, Header Injection checks) and Smart Telemetry, while maintaining lightning-fast baseline performance.
+
+| Metric                   | v1.6.0 (Baseline) | v1.7.0 (Current)      | Impact Context        |
+| :----------------------- | :---------------- | :-------------------- | :-------------------- |
+| **Routing Speed (Mean)** | ~0.15 µs (157 ns) | **~0.23 µs (234 ns)** | *+77 ns (Guardrails)* |
+| **Request Cycle (Mean)** | ~219 µs           | **~312 µs**           | *+93 µs (Telemetry)*  |
+| **Routing Ops/Sec**      | ~6,339 Kops/s     | **~4,261 Kops/s**     | *Extremely Fast*      |
+| **Cold-Boot Init Time**  | ~0.078 s          | **~0.089 s**          | *+11 ms*              |
+
+*Note: Benchmarks measure network-isolated internal overhead using mocked `responses`. Testing hardware: Darwin-CPython-3.12-64bit.*
+
+### v1.5.1 vs. v1.6.0 Refactor
 
 Our internal `pytest-benchmark` and `cProfile` suites verify these architectural gains on Python 3.14. Despite adding heavy OWASP security guardrails (PEP 578 Audit Hooks, SSRF prevention, Regex validation), the memory optimizations yielded a net performance increase.
 

mailjet_rest/_version.py

@@ -1 +1 @@
-__version__ = "1.6.0.post1.dev4"
+__version__ = "1.6.0.post1.dev18"