CI: Move to latest container images

- Bump up "Jammy" tag to jammy-20250404
- Include most recent changes to the Dockerfile itself

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index 182560e..a0fd174 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -2,7 +2,7 @@
 # This Dockerfile is used to build an image containing basic stuff to be used
 # to build U-Boot and run our test suites.
 
-FROM ubuntu:jammy-20240911.1
+FROM ubuntu:jammy-20250404
 LABEL org.opencontainers.image.authors="Tom Rini <trini@konsulko.com>"
 LABEL org.opencontainers.image.description=" This image is for building U-Boot inside a container"