[Tests-Only] Bump core test commit id as at 20201006

[phil-davis]

Includes test-related changes in core:
owncloud/core#37916 Refactor apiShareReshare1 to use Shares folder
owncloud/core#37918 Refactor apiShareReshare3 to use Shares folder
owncloud/core#37919 Refactor reshare2 test suite to use root and share folder
owncloud/core#37920 Enable apiShareReshareToShares3 tests on OCIS
owncloud/core#37928 Refactor apiShareNotifications to use Shares folder
owncloud/core#37930 refactor shareOperations test suite for Shares subfolder and root
owncloud/core#37929 Refactor apiShareCreateSpecial2 to use Shares folder
owncloud/core#37927 refactor updateShare suite for Shares subfolder and root
owncloud/core#37936 refactor shareManagement test suite for Shares subfolder and root
owncloud/core#37943 Have separate scenarios for public link share of root folder on oC10 and OCIS
owncloud/core#37938 Refactor apiShareCreateSpecial1 to use Shares folder
owncloud/core#37955 Fixup API sharing test suite names
owncloud/core#37954 API tests for etag propagation
owncloud/core#37967 Refactor federation sharing tests for shares folder
owncloud/core#37973 Don't change the directory of the share target while deduplicating
owncloud/core#37972 sharing related etag tests
owncloud/core#37980 Refactor etag tests
owncloud/core#37981 skip scenarios on old oC10 that were fixed in PR 37973
owncloud/core#37983 test etag propagation when changes happen on public links
owncloud/core#37974 Refactored some oC10 bug demonstration scenarios in api test

This gets a set of sharing API scenarios enabled that should be able to work on OCIS. They share to a folder called Shares and the share receiver accepts the share, which are the defaults on OCIS.

Also API tests for etags are added.

The list of expected failures is now longer. I raised issue owncloud/product#245 to review the list and add/update the comments so that they link to relevant issues.