add google_bigquery_table to version 5 upgrade doc for #7973

[wj-chen]

Add google_bigquery_table to version 5 upgrade doc for #7973.

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• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
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• Read Write release notes before writing my release note below.

Release Note Template for Downstream PRs (will be copied)

bigquery: added google_bigquery_table to version 5 upgrade doc

[modular-magician]

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 2 files changed, 11 insertions(+))
Terraform Beta: Diff ( 1 file changed, 6 insertions(+))