Update dependencies in github package (#1553)

* Update octokit package

* define type for function

* fix linter

* Update github package to latest

* Update RELEASES.md

src/utils.ts

@@ -13,7 +13,8 @@ const baseUrl = Utils.getApiBaseUrl()
 export const defaults: OctokitOptions = {
   baseUrl,
   request: {
-    agent: Utils.getProxyAgent(baseUrl)
+    agent: Utils.getProxyAgent(baseUrl),
+    fetch: Utils.getProxyFetch(baseUrl)
   }
 }