Globally upgrade to syn 2.x and latest quote and proc_macro2 1x versions (#13846)

* globally upgrade quote to latest 1.0.x (1.0.26)

* globally upgrade syn to final 1.0.x version (1.0.109)

* globally upgrade proc-macro2 to 1.0.56

* upgrade to syn v2.0.13 and fix everything except NestedMeta

* fix parse nested metadata code in decl_runtime_apis.rs

* Port more stuff to syn 2.0

* Make the rest compile

* Ignore error

* update to syn 2.0.14

---------

Co-authored-by: Bastian Köcher <info@kchr.de>

substrate/frame/scheduler/src/migration.rs

@@ -297,8 +297,9 @@ pub mod v4 {
 					target: TARGET,
 					"Did not clean up any agendas. v4::CleanupAgendas can be removed."
 				),
-				Some(n) =>
-					log::info!(target: TARGET, "Cleaned up {} agendas, now {}", n, new_agendas),
+				Some(n) => {
+					log::info!(target: TARGET, "Cleaned up {} agendas, now {}", n, new_agendas)
+				},
 				None => unreachable!(
 					"Number of agendas cannot increase, old {} new {}",
 					old_agendas, new_agendas
@@ -560,8 +561,9 @@ mod test {
 						"Agenda {} should be removed",
 						i
 					),
-					Some(new) =>
-						assert_eq!(Agenda::<Test>::get(i as u64), new, "Agenda wrong {}", i),
+					Some(new) => {
+						assert_eq!(Agenda::<Test>::get(i as u64), new, "Agenda wrong {}", i)
+					},
 				}
 			}
 		});