release_schedule: normalize release manager to the common practice

Author: thibaultduponchelle

Porting/release_schedule.pod

@@ -42,14 +42,14 @@ you should reset the version numbers to the next blead series.
 
 =head2 Perl 5.43
 
-  2025-07-04  5.43.0  ✓       Philippe          (tag only)
+  2025-07-04  5.43.0  ✓       Philippe Bruhat   (tag only)
   2025-07-20  5.43.1          Richard Leach
-  2025-08-20  5.43.2          Ether
+  2025-08-20  5.43.2          Karen Etheridge
   2025-09-20  5.43.3
-  2025-10-20  5.43.4          Max
-  2025-11-20  5.43.5          Thibault
+  2025-10-20  5.43.4          Max Maischein
+  2025-11-20  5.43.5          Thibault Duponchelle
   2025-12-20  5.43.6
-  2026-01-20  5.43.7          Thibault
+  2026-01-20  5.43.7          Thibault Duponchelle
   2026-02-20  5.43.8                            Contentious changes freeze
   2026-03-20  5.43.9                            User-visible changes to
                                                 correctly functioning