[ci] Add ubuntu-2404-aarch64 to test matrix in platform-support (#118847) (#118922)

(cherry picked from commit 51eb386)

# Conflicts:
#	.buildkite/pipelines/periodic-platform-support.yml

Author: jozala

.buildkite/pipelines/periodic-platform-support.yml

@@ -66,6 +66,7 @@ steps:
             image:
               - almalinux-8-aarch64
               - ubuntu-2004-aarch64
+              - ubuntu-2404-aarch64
         agents:
           provider: aws
           imagePrefix: elasticsearch-{{matrix.image}}