libktx: Update to 4.3.2 #619

Job	Run time
📊 Static checks / Code style, file formatting, and docs	3m 55s
🍏 iOS / Template (target=template_release)	2m 47s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	22m 25s
🌐 Web / Template w/o threads (target=template_release, threads=no)	22m 22s
🐧 Linux / Editor w/ Mono (target=editor)	39m 20s
🍎 macOS / Editor (target=editor, tests=yes)	49m 0s
🤖 Android / Template (target=template_release)	30m 28s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	38m 26s
🍎 macOS / Template (target=template_release)	13m 49s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	34m 13s
🏁 Windows / Editor (target=editor, tests=yes)	44m 53s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	31m 1s
🏁 Windows / Template (target=template_release)	30m 43s
🐧 Linux / Template w/ Mono (target=template_release)	24m 46s
🐧 Linux / Minimal template (target=template_release, everything disabled)	1m 43s
🪲 Godot CPP / Build and test Godot CPP	7m 4s
	6h 36m 55s

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