Update azure-pipelines.yml for Azure Pipelines

Author: FejZa

azure-pipelines.yml

@@ -42,7 +42,7 @@ steps:
   condition: and(succeeded(), eq(variables['Build.SourceBranch'], 'refs/heads/main'))
   inputs:
     credentialsOption: 'inputs'
-    serverUrl: 'sftp://ssh.strato.de:22'
+    serverUrl: '$(ftp.server)'
     username: '$(ftp.username)'
     password: '$(ftp.password)'
     rootDirectory: '$(Build.ArtifactStagingDirectory)'