Fix package deprecation warnings

[brandonocasey]

Dependencies and their chain, dependency with issue in bold

• circular-json ->
  • flat-entry-cache -> eslint -> videojs-standard: see Update file-entry-cache version to v4.0.0 eslint/eslint#11257
  • log4js -> karma: see Replace circular-json with flatted log4js-node/log4js-node#789
• tsml -> video.js: see fix: remote deprecated tsml dependency video.js#6174
• videojs-generate-karma-config@5.2.0
• text-encoding -> sinon: fixed in 7.0.0 of sinon.
• nomnom -> jsonlint -> eslint-plugin-json-light -> videojs-standard: see Replace nomnom with commander zaach/jsonlint#117
• turbocolor -> postcss-progress -> videojs-generate-postcss-config: fixed in 1.1.1 of postcss-progress and 2.1.0 of videojs-generate-postcss-config

[LoneRifle]

log4js-node/log4js-node#789 has now been merged