Bump golang.org/x/sync from 0.8.0 to 0.9.0 (#5)

Bumps [golang.org/x/sync](https://github.com/golang/sync) from 0.8.0 to
0.9.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/golang/sync/commit/151027eb5637d626749783009eab9f0a7cfb446a"><code>151027e</code></a>
README: don't recommend go get</li>
<li>See full diff in <a
href="https://github.com/golang/sync/compare/v0.8.0...v0.9.0">compare
view</a></li>
</ul>
</details>
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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -4,7 +4,7 @@ go 1.23
 
 require (
 	github.com/go-chi/chi/v5 v5.1.0
-	golang.org/x/sync v0.8.0
+	golang.org/x/sync v0.9.0
 	maragu.dev/env v0.2.0
 	maragu.dev/gomponents v1.0.0
 	maragu.dev/gomponents-htmx v0.6.1

go.sum

@@ -4,8 +4,8 @@ github.com/maragudk/is v0.1.0 h1:obq9anZNmOYcaNbeT0LMyjIexdNeYTw/TLAPD/BnZHA=
 github.com/maragudk/is v0.1.0/go.mod h1:W/r6+TpnISu+a88OLXQy5JQGCOhXQXXLD2e5b4xMn5c=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 maragu.dev/env v0.2.0 h1:nQKitDEB65ArZsh6E7vxzodOqY9bxEVFdBg+tskS1ys=
 maragu.dev/env v0.2.0/go.mod h1:t5CCbaEnjCM5mewiAVVzTS4N+oXTus2+SRnzKQbQVME=
 maragu.dev/gomponents v1.0.0 h1:eeLScjq4PqP1l+r5z/GC+xXZhLHXa6RWUWGW7gSfLh4=