Update third-party plugin imports

[nywilken]

• packer-plugin-digitalocean: Update module import path
  The DigitalOcean Packer plugin is now maintained by the Digital Ocean team.
  New release for this plugin are available at https://github.com/digitalocean/packer-plugin-digitalocean.
  Existing references to the plugin will continue to work but
  user's are advised to update the required_plugins block to use the new plugin source address.

required_plugins {
    digitalocean = {
     source =  "github.com/digitalocean/digitalocean"
     version = ">=1.0.8"
    }
}

• packer-plugin-outscale: Remove bundled plugin
  The Outscale plugin has been maintained by the Outscale team for some time now.
  In order to ensure users the most up to date version of the plugin it has been removed from Packer.
  To install the latest version of the plugin please run packer plugins install github.com/outscale/outscale.

• packer-plugin-scaleway: Remove bundled plugin
  The Scaleway plugin has been maintained by the Scaleway team for some time now.
  In order to ensure users the most up to date version of the plugin it has been removed from Packer.
  To install the latest version of the plugin please run packer plugins install github.com/scaleway/scaleway.

[sylviamoss]

Cool!!

[lbajolet-hashicorp]

Just have one question on a dependency, other than that LGTM!

Regarding Scaleway, I noticed your commit message mentions installing it with packer plugins install github.com/outscale/outscale, I imagine that's a typo?

[lbajolet-hashicorp]

That one looks off, is this a transitive dependency that's removed?

[nywilken]

This is a side effect of running go mod tidy it is possible that it came in with the recent hcp-sdk-go changes.

[nywilken]

Just have one question on a dependency, other than that LGTM!

Regarding Scaleway, I noticed your commit message mentions installing it with packer plugins install github.com/outscale/outscale, I imagine that's a typo?

@lbajolet-hashicorp good catch I updated the comment. I will add them as notes in the CHANGELOG

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