scaleway/iam-policy v3.0.0

PD-0110 moved modules/ to templates/terraform/ and cut one tag per module under the new prefix to continue each module's version lineage there. This version's own GitHub Release describes it as "Bookkeeping only -- same tree content as the move commit, no resource/behavior change", following the same pattern PD-0093 used for its own prior move. The tag and its Release were created with PR #144; only the changelog entry was missed, which is what this backfills by hand, since the automation writes entries from PR bodies alone.

No behaviour change. This version's iam_policy.tf, inputs.tf, outputs.tf and versions.tf are byte-identical to v2.0.1's. The major bump records a change to the module's source path only: a module's source path is part of its public interface, so relocating it is breaking for every consumer regardless of whether any resource definition changed (PD-0093, PD-0110).

Consumers pinning v2.0.1 and v3.0.0 resolve identical module content; the difference is which repo and tag the short URL resolves to.

#144