[TASK] Update TYPO3 to v10.4.20

Related: T3DEMO-341
2 jobs for T3DEMO-341 in 1 minute and 49 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Maintenance
manual Get dump for Content Master #514835
allowed to fail manual
 
  Lint
passed code-analysis:php #514836

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