[DXEX-489] Update GitHub package (#60)

* Update github to latest @octokit/rest.

* Refactor github API usage.

* Refactor download blob.

* Remove github package.

* Update test to match github return content.

* Add @octokit/rest to externals.

* 3.3.0

* Add changelog update.

* Replace HOST and API_PATH with BASE_URL config for github.

* Update the github changelog version bump.

* Revert the major bump of github.

* Revert "3.3.0"

This reverts commit 44c24d0.

* Revert versioning of github template.

* Bump packages to 3.3.0.

* Update changelog.

* Update changelog for 3.3.0.

CHANGELOG.md

@@ -4,10 +4,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.3.0] - 2020-04-09
 
-## Unreleased
-
+### auth0-bitbucket-deploy v3.3.0
+### auth0-github-deploy v3.3.0
+### auth0-gitlab-deploy v3.3.0
+### auth0-visualstudio-deploy v3.3.0
 - #### Changed
+  - Update the github internal library to prevent deprecated access token in url warnings from Github.
   - For SAML database connections, support client name in the `options.idpinitiated.client_id` property.
 
 ## [3.2.1] - 2020-04-02