Version bump for 4.20 stream

Needed by
https://git.eclipse.org/r/c/platform/eclipse.platform.ua/+/179069

Change-Id: I8ffbba997ff71f73c4af5a7c2ba636c326d6a977
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ua/+/179937
Tested-by: Platform Bot <platform-bot@eclipse.org>
2 files changed