Skip code signing job if dependencies aren't available

Author: dougbu

.azure/pipelines/jobs/codesign-xplat.yml

@@ -8,7 +8,7 @@ jobs:
     codeSign: true
     dependsOn:
     - ${{ parameters.inputName }}_build
-    condition: in(variables['_SignType'], 'test', 'real')
+    condition: and(in(variables['_SignType'], 'test', 'real'), in(dependencies.${{ parameters.inputName }}_build.result, 'Succeeded', 'SucceededWithIssues'))
     jobName: CodeSign_Xplat_${{ parameters.inputName }}
     jobDisplayName: "Code-sign ${{ parameters.inputName }} packages"
     agentOs: Windows