Use stable version of debian-cloud-images

Instead of using python 3.11, roll back to the stable version

Bug: 394025850
Test: kokoro
Change-Id: I3691bbc5ea7c57657054b88126c2dc2aa9b54a36
diff --git a/build/debian/build.sh b/build/debian/build.sh
index d75c3f6..7a93349 100755
--- a/build/debian/build.sh
+++ b/build/debian/build.sh
@@ -162,7 +162,7 @@
 }
 
 download_debian_cloud_image() {
-	local ver=master
+	local ver=38da93fe
 	local prj=debian-cloud-images
 	local url="https://salsa.debian.org/cloud-team/${prj}/-/archive/${ver}/${prj}-${ver}.tar.gz"
 	local outdir="${debian_cloud_image}"