upgrade to xrootd-5.4.0

var/local/mkosi/mkosi.postinst

@@ -4,11 +4,11 @@ yum install -y --releasever=7 \
     curl \
     gperftools \
     hostname \
-    xrootd-server-5.3.1 \
-    xrootd-client-5.3.1 \
-    xrootd-5.3.1 \
-    xrootd-voms-5.3.1 \
-    xrootd-libs-5.3.1 \
+    xrootd-server-5.4.0 \
+    xrootd-client-5.4.0 \
+    xrootd-5.4.0 \
+    xrootd-voms-5.4.0 \
+    xrootd-libs-5.4.0 \
     voms-clients \
     wlcg-voms-atlas \
     fetch-crl \