Rollup merge of rust-lang#87564 - spastorino:adjust-min-tait-removed-version, r=jackh726

min_type_alias_impl_trait is going to be removed in 1.56

rust-lang#87501 removed `min_type_alias_impl_trait` but meanwhile that PR was approved in homu queue, a new beta was cut so we need to bump the version because it won't be removed in 1.55.

r? ```@oli-obk```

```@bors``` rollup=always

Author: JohnTitor

compiler/rustc_feature/src/removed.rs

@@ -153,7 +153,7 @@ declare_features! (
      Some("the implementation was not maintainable, the feature may get reintroduced once the current refactorings are done")),
 
     /// Allows the use of type alias impl trait in function return positions
-    (removed, min_type_alias_impl_trait, "1.55.0", Some(63063), None,
+    (removed, min_type_alias_impl_trait, "1.56.0", Some(63063), None,
      Some("removed in favor of full type_alias_impl_trait")),
 
     // -------------------------------------------------------------------------