chore: bump minikube action to 2.15.0 #6119

Job	Run time
check_format_and_unit_tests	1m 19s
build / Special integration tests (21)	2m 21s
build / Special integration tests (17)	2m 18s
build / Special integration tests (25)	2m 6s
build / httpclient-tests (jetty) / Integration tests (25, 1.32.0, jetty)	27m 19s
build / httpclient-tests (vertx) / Integration tests (25, 1.32.0, vertx)	26m 18s
build / integration_tests (21, 1.32.4) / Integration tests (21, 1.32.4, vertx)	25m 14s
build / integration_tests (17, 1.32.4) / Integration tests (17, 1.32.4, vertx)	27m 22s
build / integration_tests (25, 1.31.8) / Integration tests (25, 1.31.8, vertx)	26m 39s
build / httpclient-tests (jdk) / Integration tests (25, 1.32.0, jdk)	26m 48s
build / integration_tests (17, 1.30.12) / Integration tests (17, 1.30.12, vertx)	24m 28s
build / integration_tests (21, 1.33.1) / Integration tests (21, 1.33.1, vertx)	26m 12s
build / integration_tests (25, 1.30.12) / Integration tests (25, 1.30.12, vertx)	24m 57s
build / integration_tests (21, 1.31.8) / Integration tests (21, 1.31.8, vertx)	26m 41s
build / integration_tests (21, 1.30.12) / Integration tests (21, 1.30.12, vertx)	25m 10s
build / integration_tests (17, 1.33.1) / Integration tests (17, 1.33.1, vertx)	26m 35s
build / integration_tests (25, 1.33.1) / Integration tests (25, 1.33.1, vertx)	26m 12s
build / integration_tests (17, 1.31.8) / Integration tests (17, 1.31.8, vertx)	26m 48s
build / integration_tests (25, 1.32.4) / Integration tests (25, 1.32.4, vertx)	25m 45s
	6h 40m 32s

Provide feedback