CICD

Bump quick-xml from 0.30.0 to 0.31.0 #1571

Job	Run time
Lint	2m 12s
Test coverage (gcc-10, clang-11)	3m 24s
Test library (macos-latest, stable)	2m 29s
Test coverage (gcc-11, clang-12)	2m 28s
Test library (macos-latest, nightly)	1m 54s
Test coverage (gcc-11, clang-13)	2m 26s
Test library (ubuntu-latest, stable)	6m 50s
Test library (ubuntu-latest, nightly)	1m 28s
Test library (windows-latest, stable)	4m 17s
Test library (windows-latest, nightly)	3m 14s
	30m 42s

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