Move misplaced upgrading entry about MSRV (#17727)

Author: findepi

docs/source/library-user-guide/upgrading.md

@@ -25,14 +25,14 @@
 
 You can see the current [status of the `51.0.0 `release here](https://github.com/apache/datafusion/issues/17558)
 
-## DataFusion `50.0.0`
-
 ### `MSRV` updated to 1.87.0
 
 The Minimum Supported Rust Version (MSRV) has been updated to [`1.87.0`].
 
 [`1.87.0`]: https://releases.rs/docs/1.87.0/
 
+## DataFusion `50.0.0`
+
 ### ListingTable automatically detects Hive Partitioned tables
 
 DataFusion 50.0.0 automatically infers Hive partitions when using the `ListingTableFactory` and `CREATE EXTERNAL TABLE`. Previously,