Update version in docs to 1.2.7 too

Thank you @ndgrigorian for catching this.

docs/source/conf.py

@@ -9,7 +9,7 @@
 project = 'mkl_random'
 copyright = '2017-2024, Intel Corp.'
 author = 'Intel Corp.'
-release = '1.2.5'
+release = '1.2.7'
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration