all: update bitmapfont to v4.0.0

Author: hajimehoshi

go.mod

@@ -3,7 +3,7 @@ module github.com/ebitengine/debugui
 go 1.23.0
 
 require (
-	github.com/hajimehoshi/bitmapfont/v4 v4.0.0-alpha.0.20250510112654-2427544c2ac7
+	github.com/hajimehoshi/bitmapfont/v4 v4.0.0
 	github.com/hajimehoshi/ebiten/v2 v2.8.7
 	github.com/kisielk/errcheck v1.9.0
 	github.com/rivo/uniseg v0.4.7

go.sum

@@ -12,8 +12,8 @@ github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/hajimehoshi/bitmapfont/v3 v3.2.0 h1:0DISQM/rseKIJhdF29AkhvdzIULqNIIlXAGWit4ez1Q=
 github.com/hajimehoshi/bitmapfont/v3 v3.2.0/go.mod h1:8gLqGatKVu0pwcNCJguW3Igg9WQqVXF0zg/RvrGQWyg=
-github.com/hajimehoshi/bitmapfont/v4 v4.0.0-alpha.0.20250510112654-2427544c2ac7 h1:XYK3c0dAxryb4kEaxmWjOQpp/vhMFRj/n2u6nqP1XQw=
-github.com/hajimehoshi/bitmapfont/v4 v4.0.0-alpha.0.20250510112654-2427544c2ac7/go.mod h1:9KdLJljAPdDiSz6KZK6s3iZl0m1HVvBgU68CYw3U2dk=
+github.com/hajimehoshi/bitmapfont/v4 v4.0.0 h1:faekbO0nmay1NZJTeckpvf6hKuqIY7HOTmQFbNM0/M0=
+github.com/hajimehoshi/bitmapfont/v4 v4.0.0/go.mod h1:9KdLJljAPdDiSz6KZK6s3iZl0m1HVvBgU68CYw3U2dk=
 github.com/hajimehoshi/ebiten/v2 v2.8.7 h1:DnvNZuB8RF0ffOUTuqaXHl9d51VAT9XYfEMQPYD37v4=
 github.com/hajimehoshi/ebiten/v2 v2.8.7/go.mod h1:durJ05+OYnio9b8q0sEtOgaNeBEQG7Yr7lRviAciYbs=
 github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=