Update Quarkus Platform and Group to v3.26.3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ jandex = "3.3.1"
 junit = "5.13.4"
 mockito="5.19.0"
 picocli = "4.7.7"
-quarkus = "3.26.2"
+quarkus = "3.26.3"
 slf4j = "2.0.17"
 
 [bundles]