Use correct namespace URI to pass XML validation (#837)

Namespace URI can't be changed deliberately from http to https

Author: jbliznak

pom.xml

@@ -15,9 +15,9 @@
   ~ limitations under the License.
   -->
 <project
-  xmlns="https://maven.apache.org/POM/4.0.0"
-  xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"
+  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 https://maven.apache.org/xsd/maven-4.0.0.xsd"
   >
   <modelVersion>4.0.0</modelVersion>