Alan Agius afc9d10688 fix(@schematics/angular): make version 12 workspace config migration idempotent
With this change we ensure that `update-angular-config-v12` migration is idempotent

Closes #20979
2021-05-31 12:49:24 +01:00
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2021-04-28 16:05:49 -07:00
2021-04-28 16:05:49 -07:00