Update branch status: Ruby 3.2 EOL, Ruby 3.3 security maintenance

Ruby 3.2 has reached end of life as of 2026-04-01 and Ruby 3.3
has transitioned from normal maintenance to security maintenance.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hsbt

_data/branches.yml

@@ -19,18 +19,17 @@
   eol_date:
 
 - name: 3.3
-  status: normal maintenance
+  status: security maintenance
   date: 2023-12-25
-  security_maintenance_date: 
+  security_maintenance_date: 2026-04-01
   eol_date:
   expected_eol_date: 2027-03-31
 
 - name: 3.2
-  status: security maintenance
+  status: eol
   date: 2022-12-25
   security_maintenance_date: 2025-04-01
-  eol_date:
-  expected_eol_date: 2026-03-31
+  eol_date: 2026-04-01
 
 - name: 3.1
   status: eol