Update version.json

- Bump version to 1.0.6-preview.
- Semver is now 2.

***NO_CI***

Author: josesimoes

source/version.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://raw.githubusercontent.com/AArnott/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "1.0.5-preview.{height}",
+  "version": "1.0.6-preview.{height}",
   "release": {
     "branchName" : "release-v{version}",
     "versionIncrement" : "minor",
@@ -11,7 +11,7 @@
   },
   "semVer1NumericIdentifierPadding": 3,
   "nugetPackageVersion": {
-    "semVer": 1
+    "semVer": 2
    },
   "publicReleaseRefSpec": [
     "^refs/heads/master$",