Bug 577442 - POM and product version change for 4.23 release

Change-Id: Ib5bbb9c52a8ef8575106be2117e4b5901fb0c588
Signed-off-by: Sravan Kumar Lakkimsetti <sravankumarl@in.ibm.com>
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.debug/+/188115
Tested-by: Sarika Sinha <sarika.sinha@in.ibm.com>
Reviewed-by: Sarika Sinha <sarika.sinha@in.ibm.com>
7 files changed