Update TxParser and Mocha

package.json

@@ -27,7 +27,7 @@
     "ripple-binary-codec": "^0.2.4",
     "ripple-hashes": "^0.3.4",
     "ripple-keypairs": "^0.10.1",
-    "ripple-lib-transactionparser": "0.7.1",
+    "ripple-lib-transactionparser": "0.8.0",
     "ws": "^3.3.1"
   },
   "devDependencies": {
@@ -39,7 +39,7 @@
     "gulp": "^4.0.2",
     "json-loader": "^0.5.2",
     "json-schema-to-markdown-table": "^0.4.0",
-    "mocha": "6.1.3",
+    "mocha": "6.2.0",
     "mocha-junit-reporter": "^1.9.1",
     "null-loader": "^0.1.1",
     "nyc": "^14.1.1",