Bump io.micrometer:micrometer-bom from 1.15.2 to 1.15.3 (#4915)

Author: dependabot[bot]

dependencies/default/pom.xml

@@ -65,7 +65,7 @@
     <log4j.version>1.2.17</log4j.version>
     <log4j2.version>2.25.1</log4j2.version>
     <maven-model.version>3.9.11</maven-model.version>
-    <micrometer.version>1.15.2</micrometer.version>
+    <micrometer.version>1.15.3</micrometer.version>
     <mockito.version>5.18.0</mockito.version>
     <mockito-inline.version>5.2.0</mockito-inline.version>
     <mock-server.version>5.15.0</mock-server.version>