Merge pull request #339 from adafruit/dependabot/pip/redis-4.5.3

Bump redis from 2.10.6 to 4.5.3

Author: dhalbert

requirements.txt

@@ -7,7 +7,7 @@ packaging==20.3
 pylint==2.11.1
 pytest
 pyyaml==5.4.1
-redis==2.10.6
+redis==4.5.3
 requests==2.25.1
 sh==1.12.14
 requests-cache==0.5.2