chore: bump edx-enterprise to 6.8.3

Inherit two changes:
- feat: add admin invite reminder emails (ENT-11581)
- fix: Move settings reads out of AppConfig, into consumers (ENT-11663)

Author: pwnage101

requirements/constraints.txt

@@ -44,7 +44,7 @@ django-stubs<6
 # The team that owns this package will manually bump this package rather than having it pulled in automatically.
 # This is to allow them to better control its deployment and to do it in a process that works better
 # for them.
-edx-enterprise==6.8.1
+edx-enterprise==6.8.3
 
 # Date: 2023-07-26
 # Our legacy Sass code is incompatible with anything except this ancient libsass version.

requirements/edx/base.txt

@@ -478,7 +478,7 @@ edx-drf-extensions==10.6.0
     #   enterprise-integrated-channels
     #   openedx-authz
     #   openedx-core
-edx-enterprise==6.8.1
+edx-enterprise==6.8.3
     # via
     #   -c requirements/constraints.txt
     #   -r requirements/edx/kernel.in

requirements/edx/development.txt

@@ -758,7 +758,7 @@ edx-drf-extensions==10.6.0
     #   enterprise-integrated-channels
     #   openedx-authz
     #   openedx-core
-edx-enterprise==6.8.1
+edx-enterprise==6.8.3
     # via
     #   -c requirements/constraints.txt
     #   -r requirements/edx/doc.txt

requirements/edx/doc.txt

@@ -569,7 +569,7 @@ edx-drf-extensions==10.6.0
     #   enterprise-integrated-channels
     #   openedx-authz
     #   openedx-core
-edx-enterprise==6.8.1
+edx-enterprise==6.8.3
     # via
     #   -c requirements/constraints.txt
     #   -r requirements/edx/base.txt

requirements/edx/testing.txt

@@ -589,7 +589,7 @@ edx-drf-extensions==10.6.0
     #   enterprise-integrated-channels
     #   openedx-authz
     #   openedx-core
-edx-enterprise==6.8.1
+edx-enterprise==6.8.3
     # via
     #   -c requirements/constraints.txt
     #   -r requirements/edx/base.txt