[14.0][FIX] l10n_it_delivery_note: unlink DNs from invoices at Cancel

[toita86]

backport of https://github.com/OCA/l10n-italy/pull/4191 for the issue https://github.com/OCA/l10n-italy/issues/4190

[OCA-git-bot]

Hi @aleuffre, @renda-dev, @MarcoCalcagni, some modules you are maintaining are being modified, check this out!

[francesco-ooops]

/ocabot merge patch

[TheMule71]

/ocabot merge patch

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you. Prepared branch 14.0-ocabot-merge-pr-4226-by-renda-dev-bump-patch, awaiting test results.

[OCA-git-bot]

On my way to merge this fine PR! Prepared branch 14.0-ocabot-merge-pr-4226-by-francesco-ooops-bump-patch, awaiting test results.

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you. Prepared branch 14.0-ocabot-merge-pr-4226-by-TheMule71-bump-patch, awaiting test results.

[OCA-git-bot]

Congratulations, your PR was merged at afb49d5a66e284bb51f0dd10a5d94a7dedd56e4e. Thanks a lot for contributing to OCA. ❤️

[OCA-git-bot]

It looks like something changed on 14.0 in the meantime. Let me try again (no action is required from you). Prepared branch 14.0-ocabot-merge-pr-4226-by-francesco-ooops-bump-patch, awaiting test results.

[OCA-git-bot]

It looks like something changed on 14.0 in the meantime. Let me try again (no action is required from you). Prepared branch 14.0-ocabot-merge-pr-4226-by-TheMule71-bump-patch, awaiting test results.

[OCA-git-bot]

Congratulations, your PR was merged at afb49d5a66e284bb51f0dd10a5d94a7dedd56e4e. Thanks a lot for contributing to OCA. ❤️