update package validate and doctools packages (#4893)

DevProject/Packages/manifest.json

   "dependencies": {
     "com.unity.2d.sprite": "1.0.0",
     "com.unity.2d.tilemap": "1.0.0",
-    "com.unity.ads": "2.0.8",
+    "com.unity.ads": "3.5.2",
-    "com.unity.ide.vscode": "1.1.4",
+    "com.unity.ide.vscode": "1.2.3",
-    "com.unity.package-manager-doctools": "1.1.1-preview.3",
-    "com.unity.package-validation-suite": "0.7.15-preview",
-    "com.unity.purchasing": "2.0.6",
-    "com.unity.test-framework": "1.1.11",
+    "com.unity.package-manager-doctools": "1.7.0-preview",
+    "com.unity.package-validation-suite": "0.19.0-preview",
+    "com.unity.purchasing": "2.2.1",
+    "com.unity.test-framework": "1.1.19",
+    "com.unity.test-framework.performance": "2.2.0-preview",
-    "com.unity.xr.legacyinputhelpers": "1.3.8",
+    "com.unity.xr.legacyinputhelpers": "2.1.6",
     "com.unity.modules.ai": "1.0.0",
     "com.unity.modules.androidjni": "1.0.0",
     "com.unity.modules.animation": "1.0.0",

DevProject/ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2019.3.3f1
-m_EditorVersionWithRevision: 2019.3.3f1 (7ceaae5f7503)
+m_EditorVersion: 2019.4.17f1
+m_EditorVersionWithRevision: 2019.4.17f1 (667c8606c536)