update RxSwift version

kuritatu18 · kuritatu18 · commit 9e3a26bc10ad · 2020-05-09T00:47:38.000+09:00
diff --git a/Cartfile b/Cartfile
@@ -1,2 +1,2 @@
-github "ReactiveX/RxSwift" "5.1.0"
+github "ReactiveX/RxSwift" ~> 5.1
 github "uber/RIBs" ~> 0.9
diff --git a/Cartfile.resolved b/Cartfile.resolved
@@ -1,2 +1,2 @@
-github "ReactiveX/RxSwift" "5.1.0"
+github "ReactiveX/RxSwift" "5.1.1"
 github "uber/RIBs" "v0.9.2"
