Bump node-powhash to 29.2.2

Author: MoneroOcean

package-lock.json

@@ -43,7 +43,7 @@
     "express": "4.22.1",
     "node-blocktemplate": "git+https://github.com/MoneroOcean/node-blocktemplate.git#v15.8.19",
     "node-lmdb": "0.10.1",
-    "node-powhash": "github:MoneroOcean/node-powhash#v29.2.1",
+    "node-powhash": "github:MoneroOcean/node-powhash#v29.2.2",
     "promise-mysql": "3.0.0",
     "protocol-buffers": "5.0.0"
   },