cargo: Bump rustc to 1.89 (#36818)

Update Rustc to 1.89.

Reviewable by commit.

Leftover work:
- #37330 
- #38777

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Co-authored-by: sagudev <16504129+sagudev@users.noreply.github.com>

components/url/lib.rs

@@ -178,7 +178,7 @@ impl ServoUrl {
         self.0.join(input).map(Self::from_url)
     }
 
-    pub fn path_segments(&self) -> Option<::std::str::Split<char>> {
+    pub fn path_segments(&self) -> Option<::std::str::Split<'_, char>> {
         self.0.path_segments()
     }