Update a user-configurable field's value.

Usage:
  confluent configuration update <key> <value> [flags]

Examples:
Set the "disable_plugins" configuration to "true".

  $ confluent configuration update disable_plugins true

Global Flags:
  -h, --help            Show help for this command.
      --unsafe-trace    Equivalent to -vvvv, but also log HTTP requests and responses which might contain plaintext secrets.
  -v, --verbose count   Increase verbosity (-v for warn, -vv for info, -vvv for debug, -vvvv for trace).
