BAEL-5246: pom cleanup (#4620)

* BAEL-5246: round 1 of pom cleanup - upto "jersey" project

* BAEL-5246: Initial pass for pom cleanup - upto spring-cloud

* BAEL-5246: pom cleanup upto testing-modules/junit5

* BAEL-5246: pom cleanup - upto xstream

* BAEL-5246: pom cleanup - last round (before review)

reactor-core/pom.xml

@@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.baeldung</groupId>
@@ -18,7 +18,6 @@
             <artifactId>reactor-core</artifactId>
             <version>${reactor-core.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>