Add tests for allow to update share access rule

Starting micro-version 2.88, Manila will allow to update
access_level of share access rule.

Depends-on: https://review.opendev.org/c/openstack/manila/+/931050
Related-Bug: #2066871
Change-Id: I8500f71b527b4e5037f128906f68385f821ebf42
diff --git a/manila_tempest_tests/config.py b/manila_tempest_tests/config.py
index decf2ac..4afa4e7 100644
--- a/manila_tempest_tests/config.py
+++ b/manila_tempest_tests/config.py
@@ -40,7 +40,7 @@
                     "This value is only used to validate the versions "
                     "response from Manila."),
     cfg.StrOpt("max_api_microversion",
-               default="2.85",
+               default="2.88",
                help="The maximum api microversion is configured to be the "
                     "value of the latest microversion supported by Manila."),
     cfg.StrOpt("region",