Chore: Update common packer

Update to fetch latest base images for
Ubuntu 18.04 and 20.04

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: If69c5776a2156333452351a571f57aff444f2bcf

diff --git a/packer/common-packer b/packer/common-packer
index e23ebc7..3dcae18 160000 (submodule)
--- a/packer/common-packer
+++ b/packer/common-packer
@@ -1 +1 @@
-Subproject commit e23ebc7439c8692eff5aebf78782068ac1507221
+Subproject commit 3dcae183d810816f31950afbe1fa08fa948e61fe