Update dependency PyMySQL to v1

Author: renovate-bot

requirements.txt

@@ -6,7 +6,7 @@ packaging==20.4
 pandas==1.0.4
 pluggy==0.13.1
 py==1.8.1
-PyMySQL==0.10.1
+PyMySQL==1.0.1
 pyparsing==2.4.7
 pytest==5.4.3
 python-dateutil==2.8.1