* upgrade workflow actions
* fix setup-node version
* change redis-64 version to 3.0.503
* fix "no password is set" for redis6,
fix tests to work with redis6,
add redis6 to workflows
* do not use assert.match (was added only at v13.6.0 & v12.16.0)
* fix errors.subscribeUnsubscribeOnly regex
* fix invaliodPassword typo
* send --save "" to redis-server in tests
* upgrade dependencies, set node minimum version to 10, use current LTS versions in tests and benchmark workflows
* change windows tests too
* revert mocha back to ^4.1.0
* fix for f5528504a0 - revert mocha back to ^4.1.0
* fix some tests and upgrade mocha
* fix two more tests
* try to fix tests in windows
* upgrade denque and redis-commands
ref #1575
* replace `new Buffer` (deprecated) with `Buffer.from`
* Buffer.from(0) should be Buffer.alloc(0)
