chore(release): Bumped to Version 15.6.0

# [15.6.0](v15.5.0...v15.6.0) (2023-12-12)

### Bug Fixes

* `split_invoices_based_on_payment_terms` (backport [#37859](#37859)) ([#38488](#38488)) ([4b76cc4](4b76cc4))
* 1st row depr. sch. value of asset put to less than 180 days acc. to I.T. S. 32 (backport [#38696](#38696)) ([#38703](#38703)) ([2bd9671](2bd9671))
* auto delete draft serial and batch bundle (backport [#38637](#38637)) ([#38654](#38654)) ([b0675f6](b0675f6))
* close PO on SCO close (backport [#38667](#38667)) ([#38681](#38681)) ([4055543](4055543))
* format only if searched text contain link value text ([d79e6e3](d79e6e3))
* get customers for leaderboard ([9d5c79d](9d5c79d))
* get items for leaderboard ([7cb38a8](7cb38a8))
* get sales partner for leaderboard ([3845d42](3845d42))
* get sales person for leaderboard ([2fcfebe](2fcfebe))
* get suppliers for leaderboard ([e205772](e205772))
* ignore non-existing regional customizations (backport [#38621](#38621)) ([#38624](#38624)) ([c70e6f2](c70e6f2))
* limit end date to current date ([dbdb971](dbdb971))
* negative batch issue (backport [#38688](#38688)) ([#38694](#38694)) ([a75081b](a75081b))
* not able to make serial and batch using csv import (backport [#38659](#38659)) ([#38662](#38662)) ([dd07eca](dd07eca))
* only highest eligible coupon applied ([#38416](#38416)) ([aa66ee6](aa66ee6))
* serial and batch bundle permission (backport [#38618](#38618)) ([#38619](#38619)) ([ce2bd15](ce2bd15))
* serial no filter in the Serial No Ledger report (backport [#38669](#38669)) ([#38682](#38682)) ([d188c8e](d188c8e))
* Shipping Address Link Showing in Buying (backport [#38634](#38634)) ([#38646](#38646)) ([4150ed9](4150ed9))
* show stock qty in popup (backport [#38698](#38698)) ([#38699](#38699)) ([6e2cde4](6e2cde4))
* typeerror on new sites ([#38692](#38692)) ([9239e73](9239e73))
* typo in unittest ([#38673](#38673)) ([14ee13c](14ee13c))
* **ux:** don't update qty blindly (backport [#38608](#38608)) ([#38639](#38639)) ([0b2e2a2](0b2e2a2))

### Features

* add employee number to client user bootinfo (backport [#38477](#38477)) ([#38603](#38603)) ([c7dbcbc](c7dbcbc))

erpnext/__init__.py

@@ -3,7 +3,7 @@
 
 import frappe
 
-__version__ = "15.5.0"
+__version__ = "15.6.0"
 
 
 def get_default_company(user=None):