[OC][docker][build] support for new RHEL8.3 version

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

cmake_targets/tools/build_helper

@@ -114,6 +114,8 @@ check_supported_distribution() {
         "rhel7.7")     return 0 ;;
         "rhel7.8")     return 0 ;;
         "rhel8.2")     return 0 ;;
+        "rhel8.3")     return 0 ;;
+        "rhel8.4")     return 0 ;;
         "centos7")     return 0 ;;
     esac
     return 1