core: Added change log

erpnext/change_log/v12/v12_6_0.md

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+## Version 12.6.0 Release Note
+
+### Enhancements
+
+- Deduction based on earnings/gross pay [#20935](https://github.com/frappe/erpnext/pull/20935)
+
+- If accounting dimension is tree-structured document and in report, filter is set based on group node, get result based on all children [#20860](https://github.com/frappe/erpnext/pull/20860)
+
+- Item alternative must have similar properties as original item [#20796](https://github.com/frappe/erpnext/pull/20796)
+
+- Show multiple manufacturers and part numbers in BOM Sock Calculated report [#19431](https://github.com/frappe/erpnext/pull/19431)
+
+
+### Optimizations
+
+- Payment Reconciliation: search for customer's return invoices then filter out gl entries [#20710](https://github.com/frappe/erpnext/pull/20710)
+
+- Optimization of GL entry posting [#20676](https://github.com/frappe/erpnext/pull/20676)
+
+- Processing of serial numbers in Material Transfer [#20722](https://github.com/frappe/erpnext/pull/20722)
+
+
+### Fixes:
+
+- Rate and amount in material request should not be copying from sales order [#20718](https://github.com/frappe/erpnext/pull/20718)
+
+- Update items after submission only if rate or qty changed [#20743](https://github.com/frappe/erpnext/pull/20743)
+
+- Odometer value was not syncing properly [#20451](https://github.com/frappe/erpnext/pull/20451)
+
+- Earn leave were not getting created when the max leaves allowed were set to 0 or less [#20535](https://github.com/frappe/erpnext/pull/20535)
+
+- Additional salary should not be created for inactive employee [#20686](https://github.com/frappe/erpnext/pull/20686)
+
+- Account dashboard was not working [#20715](https://github.com/frappe/erpnext/pull/20715)
+
+- Ignore mandatory fields while creating Material Request based on reorder level [#20720](https://github.com/frappe/erpnext/pull/20720)
+
+- Ignore permission when deleting linked emails in process of deletion of all company transactions [#20753](https://github.com/frappe/erpnext/pull/20753)
+
+- Total amount was not displaying in Journal Entry [#20794](https://github.com/frappe/erpnext/pull/20794)
+
+- HSN Code was not visible in GST itemised sales register [#20821](https://github.com/frappe/erpnext/pull/20821)
+
+- Validate Serial No/Batch No against unserialized item in Stock Reconciliation [#20858](https://github.com/frappe/erpnext/pull/20858)
+
+- Customer group filter resets on syncing invoices in offline POS [#20873](https://github.com/frappe/erpnext/pull/20873)
+
+- Purchase return were allowed even when assets are not cancelled [#20798](https://github.com/frappe/erpnext/pull/20798)
+
+- Reserved qty for production calculation if material transfer is skipped [#20900](https://github.com/frappe/erpnext/pull/20900)
+
+- Lock stock ledger entries that are being reposted to control concurrency [#20739](https://github.com/frappe/erpnext/pull/20739)