Push dev packages into nuget.org

Author: Oleksandr Poliakov

Diff for: evergreen/evergreen.yml

@@ -1756,7 +1756,7 @@ tasks:
         vars:
           PACKAGE_ID: "mongocsharpdriver"
 
-    - name: packages-push-github
+    - name: packages-push
       commands:
         - func: download-package
           vars:
@@ -1775,8 +1775,8 @@ tasks:
             PACKAGE_ID: "mongocsharpdriver"
         - func: packages-push
           vars:
-            PACKAGES_SOURCE: "https://nuget.pkg.github.com/sanych-sun/index.json"
-            PACKAGES_SOURCE_KEY: ${github_packages_key}
+            PACKAGES_SOURCE: "https://api.nuget.org/v3/index.json"
+            PACKAGES_SOURCE_KEY: ${nuget_api_key}
 
 axes:
   - id: version
@@ -2010,7 +2010,7 @@ task_groups:
       - func: install-dotnet
     tasks:
       - packages-create
-      - packages-push-github
+      - packages-push
 
 buildvariants: