engine: Update version

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>

Author: vvoland

content/reference/api/engine/_index.md

@@ -73,21 +73,21 @@ To see the highest version of the API your Docker daemon and client support, use
 ```console
 $ docker version
 Client: Docker Engine - Community
- Version:           28.3.3
+ Version:           28.4.0
  API version:       1.51
- Go version:        go1.24.5
- Git commit:        980b856
- Built:             Fri Jul 25 11:34:09 2025
+ Go version:        go1.24.7
+ Git commit:        d8eb465
+ Built:             Wed Sep  3 20:57:32 2025
  OS/Arch:           linux/amd64
  Context:           default
 
 Server: Docker Engine - Community
  Engine:
-  Version:          28.3.3
+  Version:          28.4.0
   API version:      1.51 (minimum version 1.24)
-  Go version:       go1.24.5
-  Git commit:       bea959c
-  Built:            Fri Jul 25 11:34:09 2025
+  Go version:       go1.24.7
+  Git commit:       249d679
+  Built:            Wed Sep  3 20:57:32 2025
   OS/Arch:          linux/amd64
   ...
 ```