Update parsers with support of map and union schemas

As a workaround of schema_salad#861, their `saladVersion` are modified by hand.

Author: tom-tan

dub.json

@@ -4,7 +4,7 @@
 	],
 	"copyright": "Copyright © 2022, Tomoya Tanjo",
 	"dependencies": {
-		"schema-salad-d": "~>1.1.5"
+		"schema-salad-d": "~>1.2.0"
 	},
 	"description": "Autogenerated classes for reading and writing CWL objects using the D language.",
 	"homepage": "https://github.com/common-workflow-lab/cwl-d-auto",

dub.selections.json

@@ -5,7 +5,7 @@
 		"cachetools": "0.4.1",
 		"dyaml": "0.10.0",
 		"requests": "2.1.3",
-		"schema-salad-d": "1.1.5",
+		"schema-salad-d": "1.2.0",
 		"test_allocator": "0.3.4",
 		"tinyendian": "0.2.0",
 		"unit-threaded": "0.10.8"

dub.settings.json

@@ -0,0 +1,3 @@
+{
+    "defaultLowMemory": true
+}