Update dependency io.micronaut:micronaut-core-bom to v4.3.9

Author: renovate[bot]

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ jetbrains-annotations = "24.1.0"
 jmh = "1.37"
 groovy = "4.0.18"
 
-micronaut = "4.3.3"
+micronaut = "4.3.9"
 micronaut-platform = "4.2.4"
 micronaut-docs = "2.0.0"
 micronaut-test = "4.2.0"