fix(ci): track tauri png icons for linux and macos release builds

Author: Jacobinwwey

.gitignore

@@ -24,6 +24,9 @@ ref
 *.uid
 *.png
 *.exr
+!src-tauri/icons/32x32.png
+!src-tauri/icons/128x128.png
+!src-tauri/icons/128x128@2x.png
 
 # Tauri / Rust build outputs
 src-tauri/target/