fix: default rangeStrateg to “replace”

lib/config/definitions.js

@@ -453,7 +453,7 @@ const options = [
     description: 'Policy for how to modify/update existing ranges.',
     stage: 'package',
     type: 'string',
-    default: 'auto',
+    default: 'replace',
     allowedValues: ['auto', 'pin', 'bump', 'replace', 'widen'],
     cli: false,
     env: false,

test/config/__snapshots__/index.spec.js.snap

@@ -195,7 +195,7 @@ Object {
   "prTitle": null,
   "privateKey": null,
   "python": Object {},
-  "rangeStrategy": "auto",
+  "rangeStrategy": "replace",
   "rebaseStalePrs": null,
   "recreateClosed": false,
   "renovateFork": false,