chore(deps): update terraform hashicorp/terraform to >= 1.15.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
hashicorp/terraform	required_version	patch	>= 1.15.3 → >= 1.15.4

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Release Notes

hashicorp/terraform (hashicorp/terraform)

v1.15.4

Compare Source

1.15.4 (May 20, 2026)

NEW FEATURES:

• We now produce builds for Linux s390x (zLinux) (#​38615)

BUG FIXES:

• init: Prevent provider binaries from being installed into symlinked directories (#​38611)

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