fix(deps): update dependency io.micronaut.sourcegen:micronaut-sourcegen-bom to v1.6.2 #4667

Job	Run time
build_matrix	3m 59s
build (17, test-suite-annotation-remapper:nativeTest)	7m 47s
build (17, test-suite-http-server-tck-netty:nativeTest)	7m 53s
build (17, test-suite-http2-server-tck-netty:nativeTest)	10m 6s
build (17, test-suite-kotlin-graalvm:nativeTest)	8m 28s
build (17, test-suite-logback-graalvm:nativeTest)	6m 35s
build (17, test-suite-netty-ssl-graalvm:nativeTest)	7m 35s
build (21, test-suite-annotation-remapper:nativeTest)	7m 39s
build (21, test-suite-http-server-tck-netty:nativeTest)	7m 57s
build (21, test-suite-http2-server-tck-netty:nativeTest)	10m 16s
build (21, test-suite-kotlin-graalvm:nativeTest)	7m 35s
build (21, test-suite-logback-graalvm:nativeTest)	6m 41s
build (21, test-suite-netty-ssl-graalvm:nativeTest)	7m 37s
	1h 40m 8s

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