Update nconf dependency to address CVE-2022-21803 (#566)

Signed-off-by: Mark S. Lewis <[email protected]>

Author: bestbeforetoday

fabric-client/package.json

@@ -36,7 +36,7 @@
     "lodash.clone": "4.5.0",
     "long": "^4.0.0",
     "nano": "^6.4.4",
-    "nconf": "^0.10.0",
+    "nconf": "^0.12.0",
     "promise-settle": "^0.3.0",
     "protobufjs": "5.0.3",
     "sjcl": "1.0.7",