Revert "Temporarily disable testing Amazon linux"

This reverts commit 5af31cdbd1ac226d1ce566cd3b15378b601cb41c.

.ci/jobs.t/elastic+elasticsearch+multijob+platform-support-unix.yml

@@ -15,8 +15,7 @@
           values:
             - "centos-7&&immutable"
             - "centos-8&&immutable"
-            # Disabled until we can update Log4jHotPatch
-            # - "amazon&&immutable"
+            - "amazon&&immutable"
             - "debian-10&&immutable"
             - "debian-11&&immutable"
             - "opensuse-15-1&&immutable"