- bump dependencies

- bump git action versions

src/error.rs

@@ -1,14 +1,13 @@
 use thiserror::Error;
 
-
 #[derive(Debug, Error)]
 pub enum Error {
-    #[error("io error: {0}")]
+    #[error(transparent)]
     IO(#[from] std::io::Error),
+    #[error(transparent)]
+    ColorCet(#[from] colorcet::ColorcetError),
     #[error("could not parse color: {0}")]
     ColorParse(String),
-    #[error("colorcet error: {0}")]
-    ColorCet(#[from] colorcet::ColorcetError),
     #[error("could not covert ColorMap into LinearGradient")]
-    Conversion
-}
+    Conversion,
+}