chore(deps): Update actions/checkout action to v7

.gitea/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-go@v5
         with:
           go-version: '1.23'

ui/modifiers.go

@@ -175,13 +175,3 @@ func (v View) TextDecoration(value string) View {
 	v.e.Get("style").Call("setProperty", "text-decoration", value)
 	return v
 }
-
-func (v View) LetterSpacing(spacing string) View {
-	v.e.Get("style").Call("setProperty", "letter-spacing", spacing)
-	return v
-}
-
-func (v View) LineHeight(height string) View {
-	v.e.Get("style").Call("setProperty", "line-height", height)
-	return v
-}