grafana: rebase grafana.ini to grafana 9.0.7-1

roles/grafana/templates/grafana.ini.j2

@@ -130,7 +130,7 @@ path = ":memory"
 # For "sqlite3" only. cache mode setting used for connecting to the database. (private, shared)
 ;cache_mode = private
 
-# For "mysql" only if lockingMigration feature toggle is set. How many seconds to wait before failing to lock the database for the migrations, default is 0.
+# For "mysql" only if migrationLocking feature toggle is set. How many seconds to wait before failing to lock the database for the migrations, default is 0.
 ;locking_attempt_timeout_sec = 0
 
 ################################### Data sources #########################