Update changeset config (#1483)

Author: askoufis

.changeset/config.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://unpkg.com/@changesets/config@1.5.0/schema.json",
+  "$schema": "https://unpkg.com/@changesets/config@3.0.3/schema.json",
   "changelog": [
     "@changesets/changelog-github",
     { "repo": "vanilla-extract-css/vanilla-extract" }
@@ -9,6 +9,12 @@
   "access": "public",
   "baseBranch": "master",
   "updateInternalDependencies": "patch",
+  "snapshot": {
+    "useCalculatedVersion": true
+  },
+  "privatePackages": {
+    "tag": false, "version": false
+  },
   "___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
     "onlyUpdatePeerDependentsWhenOutOfRange": true
   }