fix(deps): update dependency io.micronaut.serde:micronaut-serde-bom to v2.15.5

Author: renovate[bot]

gradle/libs.versions.toml

@@ -21,7 +21,7 @@ micronaut-logging = "1.4.0"
 micronaut-micrometer = "5.11.0"
 
 micronaut-test-resources = "2.10.1"
-micronaut-serde = "2.14.1"
+micronaut-serde = "2.15.5"
 
 [libraries]
 # Core