Bump provider ct to v0.13.0

[dghubble-renovate]

This PR contains the following updates:

Package	Type	Update	Change
ct (source)	required_provider	minor	~> 0.11 -> ~> 0.13
ct (source)	required_provider	minor	~> 0.9 -> ~> 0.13

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Release Notes

poseidon/terraform-provider-ct (ct)

v0.13.0

Compare Source

• Update the target stable Ignition spec version to v3.4.0 (#​156)
  • Parse Butane Configs to Ignition v3.4.0 (#​159)
  • Add support for fcos v1.5.0 Butane Configs
  • Add support for flatcar v1.1.0 Butane Configs
• Remove deprecated platform field
• Move implementation to an internal package (#​157)

v0.12.0

Compare Source

• Remove support for Container Linux Configs (#​132)
  • Butane Configs support fcos and flatcar variants
  • Focus on converting Butane Configs (with different variants) to Ignition
  • Flatcar Linux now supports Ignition v3.3.0
• Remove unused github.com/coroes/ignition (v1) dependencies
• Deprecate the platform field, it's no longer used

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