Add build vulnerability scan (#317)

* run vulnerability scan + testing

* revert npm audit test

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Co-authored-by: Victoria Hall <victoria.hall@microsoft.com>

Author: hallvictoria

azure-pipelines/templates/build.yml

@@ -16,6 +16,8 @@ jobs:
             displayName: 'Install Node.js'
           - script: npm ci
             displayName: 'npm ci'
+          - script: npm audit --production
+            displayName: 'Run vulnerability scan'
           - script: npm run updateVersion -- --buildNumber $(Build.BuildNumber)
             displayName: 'npm run updateVersion'
             condition: and(succeeded(), eq(${{ parameters.IsPrerelease }}, true))