Bump version to 1.49.0

Due to the recent release of 1.47.0, this PR will be stabilized in 1.49.0 instead of 1.48.0.

Author: CDirkx

library/core/src/task/poll.rs

@@ -39,15 +39,15 @@ impl<T> Poll<T> {
 
     /// Returns `true` if this is `Poll::Ready`
     #[inline]
-    #[rustc_const_stable(feature = "const_poll", since = "1.48.0")]
+    #[rustc_const_stable(feature = "const_poll", since = "1.49.0")]
     #[stable(feature = "futures_api", since = "1.36.0")]
     pub const fn is_ready(&self) -> bool {
         matches!(*self, Poll::Ready(_))
     }
 
     /// Returns `true` if this is `Poll::Pending`
     #[inline]
-    #[rustc_const_stable(feature = "const_poll", since = "1.48.0")]
+    #[rustc_const_stable(feature = "const_poll", since = "1.49.0")]
     #[stable(feature = "futures_api", since = "1.36.0")]
     pub const fn is_pending(&self) -> bool {
         !self.is_ready()