fix(deps): update spring boot to v4.0.3 (#86)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ mockk = "1.14.9"
 openapi = "7.19.0"
 postgresql = "42.7.10"
 slf4j = "2.0.17"
-spring-boot = "4.0.2"
+spring-boot = "4.0.3"
 springdoc-openapi = "3.0.1"
 testcontainers = "1.21.4"
 jsonpath = "3.0.0"