fix(deps): update dependency io.micronaut:micronaut-core-bom to v4.8.6 (#1033)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ javax-annotation-api = '1.3.2'
 micronaut-docs = '2.0.0'
 micronaut-gradle-plugin = '4.4.5'
 micronaut-tracing-legacy = '3.2.7'
-micronaut = "4.8.5"
+micronaut = "4.8.6"
 micronaut-platform = "4.7.6"
 micronaut-discovery-client = "4.6.0"
 micronaut-reactor = "3.7.0"