Merge pull request #5651 from platformsh/fix/compos-ver

fix(composable image): Update latest supported version

Author: catplat

shared/data/composable_versions.yaml

@@ -1,7 +1,7 @@
 composable:
   versions:
     supported:
-      - "25.11"
+      - "26.05"
     available:
+      - "25.11"
       - "25.05"
-      - "24.05"