Create the first revision of the secret if one doesn't exist yet

[BojanOro]

There are two separate TF resources:

• The secret container
• The secret version

We create the container with TF, not the version.

If a version doesn't exist, the script will fail and tell you to run some Terraform, which won't work because we aren't creating the version via TF.

This change just allows us to keep running even if the version is null.

[linear-code]

PRODENG-1153 K8s Apply Issue: Terragrunt created secret missing

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

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• Create the first revision of the secret if one doesn't exist yet by BojanOro in #225

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