chore(deps): update centos docker tag to v8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
centos	stage	major	7 -> 8

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: renovate[bot]
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[jayl1e]

not upgradable

[jayl1e]

not upgradable

[renovate]

Renovate Ignore Notification

Because you closed this PR without merging, Renovate will ignore this update. You will not get PRs for any future 8.x releases. But if you manually upgrade to 8.x then Renovate will re-enable minor and patch updates automatically.

If you accidentally closed this PR, or if you changed your mind: rename this PR to get a fresh replacement PR.