Stale Provider Cache Symlink

Fixed failed to create directory ...: file exists from the provider cache server

If a previous run had cached a provider by symlinking ~/.terraform.d/plugins/<provider> into Terragrunt's own provider cache, and that user plugin directory was later moved or deleted, the symlink was left dangling. The next run failed with failed to create directory ...: file exists and refused to cache the provider.

Terragrunt now removes a dangling symlink at the cache path on the next run and proceeds to download the provider. A non-symlink at that path is left in place and surfaced as an error.