Update png to 0.18

Cargo.lock

@@ -2446,7 +2446,7 @@ version = "0.14.0-dev"
 dependencies = [
  "iced_renderer",
  "iced_runtime",
- "png 0.17.16",
+ "png 0.18.0",
  "sha2",
  "thiserror 1.0.69",
 ]
@@ -4907,9 +4907,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.14.0"
+version = "2.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49db231d56a190491cb4aeda9527f1ad45345af50b0851622a7adb8c03b01c32"
+checksum = "cc1f0cbffaac4852523ce30d8bd3c5cdc873501d96ff467ca09b6767bb8cd5c0"
 dependencies = [
  "core-foundation-sys",
  "libc",

Cargo.toml

@@ -187,7 +187,7 @@ lyon = "1.0"
 lyon_path = "1.0"
 num-traits = "0.2"
 ouroboros = "0.18"
-png = "0.17"
+png = "0.18"
 pulldown-cmark = "0.12"
 qrcode = { version = "0.13", default-features = false }
 raw-window-handle = "0.6"

test/src/lib.rs

@@ -494,10 +494,13 @@ impl Snapshot {
 
         if path.exists() {
             let file = fs::File::open(&path)?;
-            let decoder = png::Decoder::new(file);
+            let decoder = png::Decoder::new(io::BufReader::new(file));
 
             let mut reader = decoder.read_info()?;
-            let mut bytes = vec![0; reader.output_buffer_size()];
+            let n = reader
+                .output_buffer_size()
+                .expect("snapshot should fit in memory");
+            let mut bytes = vec![0; n];
             let info = reader.next_frame(&mut bytes)?;
 
             Ok(self.screenshot.bytes == bytes[..info.buffer_size()])