Update Terraform flux to v1.2.2

This MR contains the following updates:

Package	Type	Update	Change
flux (source)	required_provider	patch	1.2.1 -> 1.2.2

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Release Notes

fluxcd/terraform-provider-flux (flux)

v1.2.2

Compare Source

Release date: 2023-12-19

This release includes flux2 v2.2.2.

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