CI fixes (#429)

Fixes
https://github.com/mkeeter/fidget/actions/runs/29198734598/job/86666273779?pr=428

Author: mkeeter

demos/constraints/src/main.rs

@@ -116,7 +116,7 @@ impl eframe::App for ConstraintsApp {
             );
             let from_screen = to_screen.inverse();
 
-            let debug_stroke = egui::Stroke::new(1.0, Color32::LIGHT_GRAY);
+            let debug_stroke = egui::Stroke::new(1.0_f32, Color32::LIGHT_GRAY);
             painter.extend(self.decorations.iter().map(|d| match d {
                 Decoration::Line(a, b) => {
                     let a = to_screen.transform_pos(*a);
@@ -237,7 +237,7 @@ impl eframe::App for ConstraintsApp {
                 let a = to_screen.transform_pos(pos2(pa.x.cur, pa.y.cur));
                 let pb = self.points[beam.1];
                 let b = to_screen.transform_pos(pos2(pb.x.cur, pb.y.cur));
-                let stroke = egui::Stroke::new(2.0, beam.2);
+                let stroke = egui::Stroke::new(2.0_f32, beam.2);
                 Shape::line_segment([a, b], stroke)
             }));