chore: update zcash download url

lib/blockchain/common.js

@@ -30,10 +30,9 @@ const BINARIES = {
     url: 'https://gethstore.blob.core.windows.net/builds/geth-linux-amd64-1.10.17-25c9b49f.tar.gz',
     dir: 'geth-linux-amd64-1.10.17-25c9b49f'
   },
-  // TODO: update ZEC URL for new 4.7.0 version once the tarball is available
   ZEC: {
-    url: 'https://z.cash/downloads/zcash-4.6.0-2-linux64-debian-bullseye.tar.gz',
-    dir: 'zcash-4.6.0-2/bin'
+    url: 'https://download.z.cash/downloads//zcash-4.7.0-linux64-debian-bullseye.tar.gz',
+    dir: 'zcash-4.7.0/bin'
   },
   DASH: {
     url: 'https://github.com/dashpay/dash/releases/download/v0.17.0.3/dashcore-0.17.0.3-x86_64-linux-gnu.tar.gz',

lib/blockchain/zcash.js

@@ -50,5 +50,6 @@ rpcuser=lamassuserver
 rpcpassword=${common.randomPass()}
 dbcache=500
 keypool=10000
+walletrequirebackup=false
 `
 }