agl-compositor: Update SRCREV for libweston8 update

agl-compositor: Update SRCREV for libweston8 update

The following update adds support for libweston8, pop-up kind of
dialogs, a few fixes and includes the following:

- 1956bd3bfb0 main: Convert to using the logging/debuggging fraemwork
- ac4e3581fb1 main: Add a (valid) return code when exiting
- 61dea1841a4 main: We don't have weston-debug extension available
- a7887be3ed9 meson.build: Add a meson variable to track libweston version
- 35b1ed57d2a main: Subscribe to the logger scope
- 6e60f22455c meson.build: Update build version
- 25ede504313 policy-default: Install default for the state event notify
- b4ae3794bc9 policy: Add another hook for controlling the application state change event
- 401773a4639 protocol: agl-shell-desktop: Send notification for application state change
- 795eb91d057 policy-default: Install default policy for deactivate request
- ee9259703dc policy: Add a new policy hook for deactivating apps
- 65f9de0a549 policy-default: Add the de-activate request to the default policy
- d0b4585202c agl-shell-desktop: Add the ability to hide client windows
- 410d47884ff layout: Save the pending output
- ef3d1990c49 shell: Store the ivi compositor in the desktop_client
- 5ce0b5d5200 layout, desktop: Implement the pop-up role
- ab151e5d3d1 agl-shell-desktop: Allow to set role properties for the application
- 63b6b6b1e14 shell: Display previously pending surface once the ready request was received
- 225415dcbad meson.build: Increase agl-compositor version for libweston8 upgrade
- f5141881d54 main: Update weston_compositor_add_log_scope to libweston8
- 79dacfa4f3d meson.build: Increase to libweston8 dependency
- 457456edb3d main: Use bool for weston_config_section_get_bool()

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Change-Id: Ifcc94efa9a84fb261330a43d7e22efda1bbde1ca