Update package-lock.json

Bump ccxt version. May need to update this dependency in other sub-projects soon.

Client/package-lock.json

@@ -700,9 +700,9 @@
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
     },
     "ccxt": {
-      "version": "1.26.45",
-      "resolved": "https://registry.npmjs.org/ccxt/-/ccxt-1.26.45.tgz",
-      "integrity": "sha512-/gmeUKUlNsroBR2/W7A3knZzCvPYzztb7VRwtWyqze7U/LZiXsXo1GBSC2goQIe2xL8FlAyk7ARjZrPdSWtExA=="
+      "version": "1.51.46",
+      "resolved": "https://registry.npmjs.org/ccxt/-/ccxt-1.51.46.tgz",
+      "integrity": "sha512-DuAzG5iSCnZOlmN/AensPrETukZ4WHYKaoi8SNCCd0/j8vAtVsRwgGzHv4Am0feDZ9oH8yzGtI1IlEjg7h64LA=="
     },
     "child_process": {
       "version": "1.0.2",