Elide lifetimes where possible after rustup (#34824)

The new version of rust allows us to elide some lifetimes and clippy is
now complaining about this. This change elides them where possible and
removes the clippy exceptions.

Fixes #34804.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

components/canvas/raqote_backend.rs

@@ -118,7 +118,7 @@ pub enum Pattern<'a> {
     Surface(SurfacePattern<'a>),
 }
 
-impl<'a> Pattern<'a> {
+impl Pattern<'_> {
     fn set_transform(&mut self, transform: Transform2D<f32>) {
         match self {
             Pattern::Surface(pattern) => pattern.set_transform(transform),