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/layout_2020/table/layout.rs

@@ -2922,7 +2922,7 @@ struct RowspanToDistribute<'a> {
     measure: &'a CellOrTrackMeasure,
 }
 
-impl<'a> RowspanToDistribute<'a> {
+impl RowspanToDistribute<'_> {
     fn range(&self) -> Range<usize> {
         self.coordinates.y..self.coordinates.y + self.cell.rowspan
     }