i18n(ja): fix translation defects in the v6.5.x and v6.6.0 release notes - #24158

Canceling since a higher priority waiting request for Prevent Deletion-refs/heads/master-pull_request_target exists

The operation was canceled.

Canceling since a higher priority waiting request for Prevent Deletion-refs/heads/master-pull_request_target exists

On November 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target