Remove krb5-libs pinning

Author: hgreebe

cli/src/pcluster/resources/imagebuilder/parallelcluster.yaml

@@ -225,7 +225,6 @@ phases:
                     yum clean all
                   fi
                 fi
-                yum -y update krb5-libs
                 yum -y groupinstall development && sudo yum -y install wget jq
                 if [[ ${!OS} != alinux2023 ]]; then
                   # Do not install curl on al2023 since curl-minimal-8.5.0-1.amzn2023* is already shipped and conflicts.