add base-parent 56

https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/com/github/hazendaz/base-parent/README.md

Author: hboutemy

content/com/github/hazendaz/base-parent/base-parent-56.buildspec

@@ -0,0 +1,19 @@
+groupId=com.github.hazendaz
+artifactId=base-parent
+version=56
+
+display=${groupId}:${artifactId}
+
+gitRepo=https://github.com/hazendaz/${artifactId}.git
+gitTag=${artifactId}-${version}
+
+tool=mvn-3.9.9
+jdk=21
+newline=crlf
+umask=022
+
+command="mvn clean package -DskipTests -Dmaven.javadoc.skip -Dgpg.skip -Dlicense.skip"
+buildinfo=target/${artifactId}-${version}.buildinfo
+
+#diffoscope=${artifactId}-${version}.diffoscope
+issue=