ping r version to 4.4.1 to fix test (Netflix#2127)

Author: wangchy27

.github/workflows/test.yml

@@ -61,7 +61,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04]
-        ver: ['4.4']
+        ver: ['4.4.1']
 
     steps:
     - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0