Backport of Update security-scan.hcl into release/1.19.x

[dhiaayachi]

Backport

This PR is auto-generated from hashicorp#21739 to be assessed for backporting due to the inclusion of the label backport/1.19.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@sarahalsmiller
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "3f36a9e1a0fde3a904e71d8348504bef2fb95c9b", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Description

Prepare job is still failing despite suppression, attempting to add a line with the updated version

Testing & Reproduction steps

Links

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

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Overview of commits

• 8ac0e6c - 3f36a9e