Bug 573595 - bump version for 4.21

Change-Id: I74817a1beeb1890648161c200c1625e123304133
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.resources/+/181494
Tested-by: Platform Bot <platform-bot@eclipse.org>
1 file changed