Update "requests" and add dependencies for py38

[deathaxe]

To use "requests" packages need to add a "dependencies.json" with following content:

{
    "$schema": "sublime://packagecontrol.io/schemas/dependencies",

    "*": {
        "*": [
            "requests",
            "charset-normalizer",
            "idna",
            "urllib3"
        ]
    }
}