Update Tycho pomless to 2.6.0

Change-Id: I4888f7ee56c384e6cf15246f431e8c0c6fcb5d03
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ua/+/189877
Tested-by: Platform Bot <platform-bot@eclipse.org>
1 file changed