deps: update dependency com.google.code.gson:gson to v2.11.0 #6943

Job	Run time
build (11)	12m 49s
build(21) except self-service clients	11m 34s
build (17)	12m 29s
build(8) except for gapic-generator-java	4m 21s
build(8) for gapic-generator-java	10m 18s
compatibility	2m 11s
gapic-generator-java-bom	1m 50s
dependency_analyzer_unit_test	26s
lint	31s
showcase-clirr	2m 55s
showcase (11)	4m 0s
showcase-native	8m 33s
unmanaged_dependency_check	8m 4s
showcase (17)	4m 3s
	1h 24m 4s

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