deps: update dependency dev.cel:cel to v0.7.1 #7861

Job	Run time
build (11)	15m 1s
build(21) except self-service clients	13m 23s
build (17)	15m 2s
build(8) except for gapic-generator-java	4m 12s
build(8) for gapic-generator-java	11m 41s
compatibility	1m 27s
dependency_analyzer_unit_test	20s
gapic-generator-java-bom	1m 53s
lint	30s
showcase (11)	4m 13s
showcase (17)	4m 24s
showcase-native	8m 11s
showcase (21)	3m 59s
showcase-clirr	2m 57s
unmanaged_dependency_check	5m 7s
	1h 32m 20s

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