v13: attribute correct date to release

Author: fenekku

docs/index.md

@@ -5,6 +5,6 @@ hide:
 template: frontpage.html
 ---
 
-!!! tip "July 22nd, 2025: InvenioRDM v13.0 available! ✨"
+!!! tip "July 23rd, 2025: InvenioRDM v13.0 available! ✨"
 
     🚀 Read the full [release notes](releases/v13/version-v13.0.0.md).

docs/releases/v13/version-v13.0.0.md

@@ -1,6 +1,6 @@
 # InvenioRDM v13.0
 
-_2025-07-21_
+_2025-07-23_
 
 We're happy to announce the release of InvenioRDM v13.0, the open-source repository platform for research data management, institutional repositories, and digital assets management! Version 13 will be maintained until at least 6 months following the next release. Visit our [maintenance policy page](../maintenance-policy.md) to learn more.