Upgrading 7 to 8 fail on /etc/os-release

Hi,

Upgrading from 7 to 8 and failing:

pve7to8 --full
...
unknown ID 'rocky' in /etc/os-release file, trying fallback detection

= SUMMARY =

TOTAL: 36
PASSED: 32
SKIPPED: 4
WARNINGS: 0
FAILURES: 0

cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"...

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