cecf/opentelemetry-java-instrumentation: java agent代码 @ v250_kafka

Lauri Tulmin e9c1efece2 Update to Groovy 4 (#5532)		3 lat temu
..
src	e0cb216610 Remove remaining usages of basic span asserts (#3616)	3 lat temu
build.gradle.kts	e9c1efece2 Update to Groovy 4 (#5532)	3 lat temu