Work CI-CD

- Fix base branch for VS extension PR with updates.

***NO_CI***

Author: josesimoes

azure-pipelines/update-dependents.ps1

@@ -118,10 +118,9 @@ if ($repoStatus -ne "")
     git -c http.extraheader="AUTHORIZATION: $auth" push --set-upstream origin $newBranchName > $null
 
     # start PR
-    # we are hardcoding to 'develop' branch to have a fixed one
-    # this is very important for tags (which don't have branch information)
+    # we are pointing to the $repoMainBranch 
     # considering that the base branch can be changed at the PR ther is no big deal about this 
-    $prRequestBody = @{title="$prTitle";body="$commitMessage";head="$newBranchName";base="develop"} | ConvertTo-Json
+    $prRequestBody = @{title="$prTitle";body="$commitMessage";head="$newBranchName";base="$repoMainBranch"} | ConvertTo-Json
     $githubApiEndpoint = "https://api.github.com/repos/nanoframework/nf-Visual-Studio-extension/pulls"
     [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12