bump mysql-connector-python (Azure#2881)

Author: fengzhou-msft

src/db-up/HISTORY.rst

@@ -3,6 +3,10 @@
  Release History
 ===============
 
+0.2.1 (2021-01-11)
+++++++++++++++++++
+* Bump mysql-connector-python to 8.0.14 to fix CVE-2019-2435
+
 0.2.0 (2020-7-29)
 ++++++++++++++++
 * `az postgres down`: Add more arguments to fix issue #942