fix(deps): update dependency io.micronaut.validation:micronaut-validation-bom to v4.12.0 (#596)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ micronaut-security = "4.16.0"
 micronaut-serde = "2.16.2"
 micronaut-logging = "1.7.0"
 micronaut-servlet = "5.6.0"
-micronaut-validation = "4.9.0"
+micronaut-validation = "4.12.0"
 jakarta-jaxrs-tck = "4.0.1"
 
 [libraries]