#1470 update tiny-secp256k1 to v1.1.6

Author: motorina0

package-lock.json

@@ -60,7 +60,7 @@
     "merkle-lib": "^2.0.10",
     "pushdata-bitcoin": "^1.0.1",
     "randombytes": "^2.0.1",
-    "tiny-secp256k1": "^1.1.5",
+    "tiny-secp256k1": "^1.1.6",
     "typeforce": "^1.11.3",
     "varuint-bitcoin": "^1.0.4",
     "wif": "^2.0.1"