Bump runtime version. (#8753)

Author: isoos

CHANGELOG.md

@@ -4,6 +4,7 @@ AppEngine version, listed here to ease deployment and troubleshooting.
 ## Next Release (replace with git tag when deployed)
 
 ## `20250512t092200-all`
+ * Bump runtimeVersion to `2025.05.13`.
 
 ## `20250506t102500-all`
  * Bump runtimeVersion to `2025.04.29`.

app/lib/shared/versions.dart

@@ -24,10 +24,10 @@ final RegExp runtimeVersionPattern = RegExp(r'^\d{4}\.\d{2}\.\d{2}$');
 /// when the version switch happens.
 const _acceptedRuntimeVersions = <String>[
   // The current [runtimeVersion].
-  '2025.04.29',
+  '2025.05.13',
   // Fallback runtime versions.
+  '2025.04.29',
   '2025.04.24',
-  '2025.04.01',
 ];
 
 /// Sets the current runtime versions.