fix(deps): update dependency sortablejs to v1.15.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sortablejs	1.15.3 -> 1.15.6

---

Release Notes

SortableJS/Sortable (sortablejs)

v1.15.6

Compare Source

• Restore pervious text clearing selection behaviour on fallback-enabled sortable lists. Text should be cleared whenever mouse is down on a sortable item, but text inputs within items should still be interactable
• #​2244: Fix issue where multi-drag selection doesn't work on IOS devices

v1.15.5

Compare Source

• #​2410: Further improvements to handling of text selection during drag, to allow text inputs to continue to function within sortable items. Removed the previous nextTick solution which caused text inputs to be noninteractive, and instead have moved the text selection clearing to the actual drag start.

v1.15.4

Compare Source

• Fix issue where text selection occurs during dragging when fallback is enabled
• Improved support for pointer events
• #​1897: [MultiDrag] Prevent multi-select of non-draggable and filtered items

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.