In #1070 we updated the version numbers of rustworkx to indicate the main branch is developing the next release. However, in that PR we neglected to update the mergify backport branch. This means when we tag a PR to main as stable backport potential mergify will incorrectly backport the PR to stable/0.13 instead of stable/0.14. This commit corrects this oversight and updates the mergify config to backport to the correct branch.
In #1070 we updated the version numbers of rustworkx to indicate the main branch is developing the next release. However, in that PR we neglected to update the mergify backport branch. This means when we tag a PR to main as stable backport potential mergify will incorrectly backport the PR to stable/0.13 instead of stable/0.14. This commit corrects this oversight and updates the mergify config to backport to the correct branch.