test(deps): update terraform docker tag to v1.9.6

[renovate]

This PR contains the following updates:

Package	Update	Change
terraform (source)	patch	1.9.5 -> 1.9.6

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Release Notes

hashicorp/terraform (terraform)

v1.9.6

Compare Source

1.9.6 (September 18, 2024)

BUG FIXES:

• plan renderer: Render complete changes within unknown nested blocks. (#​35644)
• plan renderer: Fix crash when attempting to render unknown nested blocks that contain attributes forcing resource replacement. (#​35644)
• plan renderer: Fix crash when rendering a plan that contains null attributes being update to unknown values. (#​35709)

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