fix(deps): update dependency io.micronaut.reactor:micronaut-reactor-bom to v3.9.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -33,7 +33,7 @@ micronaut-security = "4.15.0"
 micronaut-serde = "2.15.5"
 micronaut-rxjava2 = "2.9.0"
 micronaut-rxjava3 = "3.9.0"
-micronaut-reactor = "3.9.0"
+micronaut-reactor = "3.9.1"
 micronaut-gradle-plugin = "4.5.5"
 micronaut-groovy = "4.7.0"
 micronaut-validation = "4.11.0"