go.mod: fix wrong reference to tcell dependency

Signed-off-by: Adrian Moreno <amorenoz@redhat.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/rivo/tview
 go 1.12
 
 require (
-	github.com/gdamore/tcell/v2 v2.4.1-0.20210904044819-ae5116d72813
+	github.com/gdamore/tcell/v2 v2.4.1-0.20210905002822-f057f0a857a1
 	github.com/lucasb-eyer/go-colorful v1.2.0
 	github.com/mattn/go-runewidth v0.0.13
 	github.com/rivo/uniseg v0.2.0