Update libxml2 to 2.13.5 (#651) #1687

Job	Run time
Run Coverity tests	0s
Run CodeQL tests	3m 5s
Build on Ubuntu for androidarm	4m 42s
Build on Fedora 40	1m 3s
Build on Fedora 41	1m 0s
Build on Ubuntu for androidarm64	4m 31s
Build on Fedora rawhide	59s
Build on Ubuntu for androidx86_64	4m 47s
Build on macOS for macos	6m 22s
Deploy pages	29s
Build on macOS for iphoneos	2m 35s
Build on macOS for iphonesimulator	3m 37s
Build on Ubuntu 20.04	2m 41s
Build on Windows (143, x86)	14m 43s
Build on Ubuntu 22.04	2m 40s
Build on Windows (143, x64)	15m 27s
Build on Ubuntu 24.04	2m 31s
Build on Ubuntu 24.10	2m 45s
Build on Windows (143, arm64)	13m 15s
Build on Windows (142, x86)	15m 6s
Build on Windows (142, x64)	15m 11s
Build on Windows (142, arm64)	12m 27s
	2h 9m 56s

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