Update secp256k1 submodule to 3b6c90a

sstone · sstone · commit 1cf24b0519d2 · 2024-04-17T09:30:13.000+02:00
diff --git a/native/secp256k1 b/native/secp256k1
@@ -1 +1 @@
-Subproject commit 2512e4b9431363cbd2998ce2ac43ab90c8134d37
+Subproject commit 3b6c90a93fb55b2ea5fc629762bf4c3c569211cf
