Add GPT-5.3-Codex to EU data residency model list (#61202)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: 3 people

content/admin/data-residency/github-copilot-with-data-residency.md

@@ -48,16 +48,17 @@ The models available for {% data variables.product.prodname_copilot_short %} var
 
 ### European Union
 
-* GPT-4o mini
-* GPT-4.1
-* GPT-5 mini
-* GPT-5.2
-* GPT-5.4
-* Claude Haiku 4.5
-* Claude Sonnet 4.5
-* Claude Opus 4.5
-* Claude Sonnet 4.6
-* Claude Opus 4.6
+* {% data variables.copilot.copilot_gpt_4o_mini %}
+* {% data variables.copilot.copilot_gpt_41 %}
+* {% data variables.copilot.copilot_gpt_5_mini %}
+* {% data variables.copilot.copilot_gpt_52 %}
+* {% data variables.copilot.copilot_gpt_53_codex %}
+* {% data variables.copilot.copilot_gpt_54 %}
+* {% data variables.copilot.copilot_claude_haiku_45 %}
+* {% data variables.copilot.copilot_claude_sonnet_45 %}
+* {% data variables.copilot.copilot_claude_opus_45 %}
+* {% data variables.copilot.copilot_claude_sonnet_46 %}
+* {% data variables.copilot.copilot_claude_opus_46 %}
 
 ## Pricing changes