Update xrootd to version 5.5.4

[smuzaffar]

This version builts the Secztn plugin for default (previously it was not build when xrootd was build with XRDCL_ONLY.
Dropped scitokens-cpp dependency which is only needed when xrootd is build for server side scitoken support.

https://github.com/xrootd/xrootd/blob/master/docs/ReleaseNotes.txt

+ **Minor bug fixes**
 **[SSI]** Avoid file system+SSI feature interference that caused problems
 **[Server]** Fix dropped connections when link is reused (issue 1928)
 **[Server]** Limit max number of sockets in poller (issue 1962)
 **[Tests]** Fix intermittent failure of SocketTest
 **[XrdApps]** Fix crashes and deadlocks in xrdreplay tool (issue 1937)
 **[XrdCl]** Remove interference between sessions in the client (issue 1942)
 **[XrdCrypto]** Allow ASN1 GeneralizedTime in certificates (issue 1969)
 **[XrdCrypto]** Fix handling of daylight savings time (issues 985, 1955)
 **[XrdHttp]** Avoid sending empty headers in the HTTP response
 **[XrdHttp]** Clear digest header between requests (issue 1956)
 **[XrdHttp]** Fix for HTTP requests with open-ended byte range
 **[XrdHttp]** Fix handling of SSL shutdown during cleanup (issue 1967)
 **[XrdHttp]** Fix parsing of configuration with weighted checksums (issue 1944)
 **[XrdHttp]** Only call ERR_print_errors() if an error occurred
 **[XrdPfc]** Fix HTTP request failures with direct read mode enabled
 **[XrdTls]** Fix intermittent clients disconnections on login (issue 1952)

+ **Miscellaneous**
 **[XrdHttp]** Map authentication failure to HTTP 401 instead of 500
 **[XrdSecztn]** Enable ZTN plugin by default

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_13_1_X/master.

@smuzaffar, @aandvalenzuela, @iarspider can you please review it and eventually sign? Thanks.
@perrotta, @dpiparo, @rappoccio you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5ad701/32331/summary.html
COMMIT: cd7cbb8
CMSSW: CMSSW_13_1_X_2023-05-02-2300/el8_amd64_gcc11
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmsdist/8490/32331/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw Update tag for DataFormats-FEDRawData to V00-01-00 #8489
• @cms-sw Fix for llvm-static checks #8487

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5ad701/32331/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5ad701/32331/git-merge-result

Comparison Summary

Summary:

• You potentially added 4 lines to the logs
• Reco comparison results: 3 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3460877
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 3460851
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 2.4959999999999996 KiB( 47 files compared)
• DQMHistoSizes: changed ( 1000.0,... ): 0.078 KiB Tracking/MessageLog
• Checked 207 log files, 159 edm output root files, 48 DQM output files
• TriggerResults: no differences found