fixes migrations for v8

src/Umbraco.Core/Migrations/Upgrade/V_7_12_0/SetDefaultTagsStorageType.cs

@@ -22,7 +22,7 @@ namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
             if (Context?.Database == null) return;
 
             // We need to get all datatypes with an alias of "umbraco.tags" so we can loop over them and set the missing values if needed
-            var datatypes = Context.Database.Fetch<DataTypeDto>("SELECT * FROM cmsDataType");
+            var datatypes = Context.Database.Fetch<DataTypeDto>();
             var tagsDataTypes = datatypes.Where(x => string.Equals(x.EditorAlias, Constants.PropertyEditors.Aliases.Tags, StringComparison.InvariantCultureIgnoreCase));
 
             foreach (var datatype in tagsDataTypes)

src/Umbraco.Core/Migrations/Upgrade/V_7_12_0/UpdateUmbracoConsent.cs

@@ -9,7 +9,7 @@ namespace Umbraco.Core.Migrations.Upgrade.V_7_12_0
         public UpdateUmbracoConsent(IMigrationContext context)
             : base(context)
         { }
-        
-        public override void Migrate()
        {
            Alter.Table("umbracoConsent").AlterColumn("comment").AsString().Nullable().Do();
        }
+
+        public override void Migrate()
        {
            Alter.Table(Constants.DatabaseSchema.Tables.Consent).AlterColumn("comment").AsString().Nullable().Do();
        }
     }
 }