Update composer.json

Author: Taras Dovgal

composer.json

@@ -25,7 +25,7 @@
   "require": {
     "php-64bit": ">=7.0",
     "pleonasm/merkle-tree": "1.0.0",
-    "composer/semver": "^1.4.0",
+    "composer/semver": "^1.4.0|^3.2.0",
     "lastguest/murmurhash": "v2.0.0",
     "mdanter/ecc": "^0.5.0",
     "bitwasp/buffertools": "^0.5.0",