Update member status

This commit intends to
1. Remove rays22 as member of the OBO Operations Committee.
2. Add rays22 to OBO Operations Alumni.

Author: rays22

_data/alumni.yml

@@ -63,3 +63,8 @@ members:
   name: Ramona Walls
   orcid: 0000-0001-8815-0078
   wikidata: Q63240627
+- github: rays22
+  name: Ray Stefancsik
+  orcid: 0000-0001-8314-2140
+  wikidata: Q52097457
+  departed: 2025-05-01

_data/operations.yml

@@ -311,16 +311,6 @@ members:
   name: Randi Vita
   orcid: 0000-0001-8957-7612
   wikidata: Q58116889
-- affiliation:
-    name: European Bioinformatics Institute (EMBL-EBI), Cambridge
-    ror: 02catss52
-  country: UK
-  github: rays22
-  groups:
-  - technical
-  name: Ray Stefancsik
-  orcid: 0000-0001-8314-2140
-  wikidata: Q52097457
 - affiliation:
     name: Intelligent Medical Objects (IMO), Rosemont, IL
     ror: 03y46nb69