APISIX supports encrypting fields holding sensitive information like `password`, `access_token` etc. This is supported by the `enable_encrypt_fields <https://github.com/apache/apisix/blob/c0e3d9150f06c3140a52d145782085d26bc1ea67/conf/config-default.yaml#L121>` configuration field in the config.yaml file which is `false` by default.
I propose that we should encrypt such sensitive fields by default by setting `enable_encrypt_fields` to `true` to reduce the chances of sensitive information leaks.
