Alan Agius 6d2087b8f8 fix(@angular-devkit/build-angular): automatically purge stale build cache entries
With every build-angular release, previously created cache entries get stale and are no longer used. This causes the cache to keep growing as older files are not purged.

With this change we automatically purge entries that have been created with older version of build-angular and can no longer be used with the current installed version.

Closes #22323
2022-01-12 09:46:03 -08:00
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