Update snapshot and buildkit images

Snapshot contains a fixed configuration in Drupal's DB (otherwise,
config export will be corrupt)

New Drupal image from buildkit contains startup checks that will detect
corrupt configuration upon boot of a non-dev environment.

.env

@@ -66,10 +66,10 @@ REPOSITORY=ghcr.io/jhu-sheridan-libraries/idc-isle-dc
 
 # The version of the isle-buildkit images, non isle-buildkit images have
 # their versions specified explicitly in their respective docker-compose files.
-TAG=upstream-20200824-f8d1e8e-11-gb758f8b
+TAG=upstream-20200824-f8d1e8e-14-g09641e3
 
 # Docker image and tag for snapshot image
-SNAPSHOT_TAG=upstream-20201007-739693ae-106-g3c42d40.1606169126
+SNAPSHOT_TAG=upstream-20201007-739693ae-107-g664cbfe.1607707257
 
 # IdP, SP entity URIs and base URLs
 SP_BASEURL=https://islandora-idc.traefik.me