Log Message:
Update drupal8 to 8.7.10

Symfony http-foundation has been updated to version 3.4.35 in this
release. This includes an upstream security release which does not
impact Drupal core.

Core versioning support in *.info.yml files since 8.7.7

Drupal 8.7.7 introduces a new core_version_requirement key to
*.info.yml files, allowing contributed modules to specify specific
versions for Drupal core compatiblity, as well as to indicate that
they are compatible with both Drupal 8 and the forthcoming Drupal
9 release. See the change record for more details.  Important
accessibility fix to the Toolbar

This releases resolves a significant accessibility bug which
prevented toolbar links from working with some screen readers.
Websites which need to support administrators who use assistive
technology are strongly recommended to upgrade. If in doubt, assume
this is the case, particularly in larger organizations. Discussing
the issue with staff from IT user-support, disabled employee support,
and human resources teams is advisable.  Internal change to entity
and field definition update events

It is now possible to install a new field storage definition during
a fieldable entity type update. Event subscribers for entity type
and field definition update events will now be passed the updated
definitions rather than the outdated ones. Code relying on this
buggy behavior may need adjustment.