update to Zebra 4.5.0 (trezor#1532)

Author: cranycrane

configs/coins/zcash.json

@@ -22,10 +22,10 @@
         "package_name": "backend-zcash",
         "package_revision": "satoshilabs-1",
         "system_user": "zcash",
-        "version": "4.4.1",
-        "docker_image": "zfnd/zebra:4.4.1",
+        "version": "4.5.0",
+        "docker_image": "zfnd/zebra:4.5.0",
         "verification_type": "docker",
-        "verification_source": "96149af0257d1f52612544b68f160f8c1bd1d229a47aced203bfa35f4925137d",
+        "verification_source": "9fd0125f01a04f3ebaec3d0c6426ee4fa48c7a587e62a12d1ac79c3d5fc357e7",
         "extract_command": "mkdir backend/bin && docker cp extract:/usr/local/bin/zebrad backend/bin/zebrad",
         "exclude_files": [],
         "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/zebrad --config {{.Env.BackendInstallPath}}/{{.Coin.Alias}}/zcash.conf start",