build: go 1.24

We were running behind and there were quite some deprecations to update.
This was mostly in the upstream copy/pasta package but seems quite
minimal.

vendor/google.golang.org/protobuf/internal/impl/message_reflect.go

@@ -72,8 +72,6 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 			fi = fieldInfoForMap(fd, fs, mi.Exporter)
 		case fd.IsList():
 			fi = fieldInfoForList(fd, fs, mi.Exporter)
-		case fd.IsWeak():
-			fi = fieldInfoForWeakMessage(fd, si.weakOffset)
 		case fd.Message() != nil:
 			fi = fieldInfoForMessage(fd, fs, mi.Exporter)
 		default:
@@ -219,9 +217,6 @@ func (mi *MessageInfo) makeFieldTypes(si structInfo) {
 			}
 		case fd.Message() != nil:
 			ft = fs.Type
-			if fd.IsWeak() {
-				ft = nil
-			}
 			isMessage = true
 		}
 		if isMessage && ft != nil && ft.Kind() != reflect.Ptr {