bump numcodecs version in dev requirements

Author: alimanfoo

requirements_dev.txt

@@ -15,7 +15,7 @@ idna==2.6
 mccabe==0.6.1
 monotonic==1.3
 msgpack-python==0.4.8
-numcodecs==0.5.3
+numcodecs==0.5.4
 packaging==16.8
 pkginfo==1.4.1
 pluggy==0.5.2