Bump fast-xml-builder from 1.1.4 to 1.2.0 #35667

Job	Run time
knip	30s
coverage	11m 34s
browser-integration	2m 37s
format	28s
package-size	1m 39s
smoke	47s
baselines	10m 17s
lint	55s
misc	29s
Test Node 24 on windows-latest	10m 34s
Test Node 24 on ubuntu-latest	8m 29s
self-check	54s
Test Node 14 on windows-latest	14m 21s
typecheck	45s
Test Node 14 on ubuntu-latest	11m 59s
Test Node lts/* on ubuntu-latest with --no-bundle	10m 50s
required	3s
	1h 27m 11s

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