fix: upgrade prompt dep to fix non-existent property warning

[jamsinclair]

Summary

Fixes #74

When running the command line tool with node versions greater than 14, the following warning is displayed:

(node:1793) Warning: Accessing non-existent property 'padLevels' of module exports inside circular dependency

With node --trace-warnings enabled we see the full warning:

(node:1793) Warning: Accessing non-existent property 'padLevels' of module exports inside circular dependency
    at emitCircularRequireWarning (node:internal/modules/cjs/loader:707:11)
    at Object.get (node:internal/modules/cjs/loader:721:5)
    at Object.exports.setLevels (/Users/person/workspace/NodeMCU-Tool/node_modules/winston/lib/winston/common.js:32:14)
    at Object.<anonymous> (/Users/person/workspace/NodeMCU-Tool/node_modules/winston/lib/winston.js:83:8)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)

This seems to relate to an old version winston used by the prompt library. Upgrading prompt to 1.x.x seems to resolve the issue and the command line works as expected.