Update module go-redis/redis/v8 to v8.1.1

Author: renovate-bot

go.mod

@@ -3,6 +3,6 @@ module github.com/go-redis/redis_rate/v9
 go 1.13
 
 require (
-	github.com/go-redis/redis/v8 v8.0.0
+	github.com/go-redis/redis/v8 v8.1.1
 	github.com/stretchr/testify v1.6.1
 )

go.sum

@@ -13,6 +13,8 @@ github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-redis/redis/v8 v8.0.0 h1:PC0VsF9sFFd2sko5bu30aEFc8F1TKl6n65o0b8FnCIE=
 github.com/go-redis/redis/v8 v8.0.0/go.mod h1:isLoQT/NFSP7V67lyvM9GmdvLdyZ7pEhsXvvyQtnQTo=
+github.com/go-redis/redis/v8 v8.1.1 h1:O7R8kajfkEg2BgSn+blItMi0j3T83ps5hwv86HtlSN4=
+github.com/go-redis/redis/v8 v8.1.1/go.mod h1:ysgGY09J/QeDYbu3HikWEIPCwaeOkuNoTgKayTEaEOw=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=