release: Update package.xml version to 3.11.0

10 jobs for master in 2 minutes and 49 seconds (queued for 4 seconds)
Status Name Job ID Coverage
  Test
passed doc-coverage #133470

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passed format #133471

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passed robotpkg-example-robot-data-18.04 #133462

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passed robotpkg-example-robot-data-20.04 #133463

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passed robotpkg-example-robot-data-buster #133464

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passed robotpkg-example-robot-data-ferrum #133465

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passed robotpkg-py-example-robot-data-18.04 #133466

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passed robotpkg-py-example-robot-data-20.04 #133467

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passed robotpkg-py-example-robot-data-buster #133468

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passed robotpkg-py-example-robot-data-ferrum #133469

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