Fix files changes filtering in CI (#11714)

[frouioui]

Description

This is a backport of #11714.

Related Issue(s)

• go.sum changes not detected by the files changed filter in CI #11745

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Documentation was added or is not required

[vitess-bot]

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