chore(deps): bump io.micrometer:micrometer-core from 1.15.3 to 1.15.4… #5528

Job	Run time
sample_operators_tests (sample-operators/webpage)	3m 6s
sample_operators_tests (sample-operators/tomcat-operator)	3m 49s
sample_operators_tests (sample-operators/mysql-schema)	2m 57s
sample_operators_tests (sample-operators/leader-election)	3m 37s
	13m 29s

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