Move springdoc version into correct section

pom.xml

@@ -59,6 +59,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <!-- Dependencies (other than Maven plugins) -->
         <micrometer.version>1.13.3</micrometer.version>
+        <springdoc.version>2.6.0</springdoc.version>
         <!-- Maven plugins -->
         <maven-project-info-reports-plugin.version>3.7.0</maven-project-info-reports-plugin.version>
         <maven-enforcer-plugin.version>3.5.0</maven-enforcer-plugin.version>
@@ -69,7 +70,6 @@
         <jacoco.version>0.8.12</jacoco.version>
         <spotbugs.version>4.8.6</spotbugs.version>
         <spotbugs-maven-plugin.version>4.8.6.2</spotbugs-maven-plugin.version>
-        <springdoc.version>2.6.0</springdoc.version>
         <findsecbugs.version>1.12.0</findsecbugs.version> <!-- spotbugs plugin for security audits of web apps -->
         <spotless.version>2.43.0</spotless.version>
         <!-- Test-related settings -->