Update Ubuntu RTOS image version (#3365)

Co-authored-by: Abhay Krishna Arunachalam <arnchlm@amazon.com>

projects/canonical/ubuntu/Makefile

@@ -7,7 +7,6 @@ REPO_OWNER=canonical
 RTOS_BUCKET_NAME?=
 RTOS_IMAGE_DATE=$(shell cat RTOS_IMAGE_DATE)
 RELEASE_BRANCH=1-29
-RTOS_SOURCE_URL=https://$(RTOS_BUCKET_NAME).s3.us-west-2.amazonaws.com/ubuntu/jammy/$(RTOS_IMAGE_DATE)/ubuntu-jammy-eks-anywhere-pro-realtime-minimal-amd64-eks-anywhere-$(RELEASE_BRANCH)-pro-realtime.raw.gz
 
 HAS_S3_ARTIFACTS=true
 SIMPLE_CREATE_BINARIES=false
@@ -35,7 +34,7 @@ s3-artifacts: download-rtos-image
 
 .PHONY: download-rtos-image
 download-rtos-image:
-	build/download_rtos_image.sh $(RTOS_SOURCE_URL) $(ARTIFACTS_PATH)
+	build/download_rtos_image.sh $(RTOS_BUCKET_NAME) $(RTOS_IMAGE_DATE) $(ARTIFACTS_PATH) $(RELEASE_BRANCH)
 
 
 ########### DO NOT EDIT #############################

projects/canonical/ubuntu/RTOS_IMAGE_DATE

@@ -1 +1 @@
-20240414
+20240624

projects/canonical/ubuntu/build/download_rtos_image.sh

@@ -18,13 +18,15 @@ set -x
 set -o errexit
 set -o pipefail
 
-RTOS_SOURCE_URL="${1?Specify first argument - source URL for the Ubuntu RTOS image}"
-ARTIFACTS_PATH="${2?Specify second argument - artifacts path}"
+RTOS_BUCKET_NAME="${1?Specify first argument - Ubuntu RTOS image bucket name}"
+RTOS_IMAGE_DATE="${2?Specify second argument - Ubuntu RTOS image build date}"
+ARTIFACTS_PATH="${3?Specify third argument - artifacts path}"
+RELEASE_BRANCH="${4?Specify fourth argument - release branch}"
 
 function build::download::ubuntu::rtos::image(){
     mkdir -p $ARTIFACTS_PATH
-    filename=$(basename $RTOS_SOURCE_URL)
-    curl -s $RTOS_SOURCE_URL -o $ARTIFACTS_PATH/ubuntu.gz
+    download_path=s3://$RTOS_BUCKET_NAME/ubuntu/jammy/$RTOS_IMAGE_DATE/ubuntu-jammy-eks-anywhere-pro-realtime-minimal-amd64-eks-anywhere-$RELEASE_BRANCH-pro-realtime.raw.gz
+    aws s3 cp $download_path $ARTIFACTS_PATH/ubuntu.gz
 }
 
 build::download::ubuntu::rtos::image