[load] update min required cli core version

Author: mbhardwaj-msft

src/load/HISTORY.rst

@@ -2,6 +2,11 @@
 
 Release History
 ===============
+1.4.1
+++++++
+* Update minimum required version of azure-cli-core to 2.66.0. This is needed to use `from azure.cli.core.util import run_az_cmd`. 
+
+
 1.4.0
 ++++++
 * Add support for multi-region load test configuration. Multi-region load test configuration can be set using `--regionwise-engines` argument in 'az load test create' and 'az load test update' commands. Multi-region load test configuration set in YAML config file under key `regionalLoadTestConfig` will also be honoured.

src/load/azext_load/azext_metadata.json

@@ -1,3 +1,3 @@
 {
-    "azext.minCliCoreVersion": "2.41.0"
+    "azext.minCliCoreVersion": "2.66.0"
 }

src/load/setup.py

@@ -10,7 +10,7 @@
 
 
 # HISTORY.rst entry.
-VERSION = '1.4.0'
+VERSION = '1.4.1'
 
 # The full list of classifiers is available at
 # https://pypi.python.org/pypi?%3Aaction=list_classifiers