fix history and version

Author: anandgmenon02

src/containerapp/HISTORY.rst

@@ -6,6 +6,7 @@ upcoming
 ++++++
 * 'az containerapp session code-interpreter execute': Extend maximum supported value of `--timeout-in-seconds` from 60 to 220.
 * 'az containerapp job create': Fix message with `--help`
+* 'az containerapp arc': Enable setup custom core dns for Openshift on Arc
 
 1.2.0b1
 ++++++

src/containerapp/setup.py

@@ -28,7 +28,7 @@
 # TODO: Confirm this is the right version number you want and it matches your
 # HISTORY.rst entry.
 
-VERSION = '1.2.0b1'
+VERSION = '1.2.0b2'
 
 # The full list of classifiers is available at
 # https://pypi.python.org/pypi?%3Aaction=list_classifiers