Update version following branching (#684)

Author: tomleb

.github/renovate.json

@@ -4,6 +4,7 @@
   ],
   "baseBranchPatterns": [
     "main",
+    "release/v0.6",
     "release/v0.5",
     "release/v0.4",
     "release/v0.3",

VERSION.md

@@ -4,7 +4,8 @@ The current supported release lines are:
 
 | Norman Branch | Norman Minor version | Matching Rancher Version |
 |--------------------------|------------------------------------|------------------------------------------------|
-| main | v0.6 | v2.12 |
+| main | v0.7 | v2.13 |
+| release/v0.6 | v0.6 | v2.12 |
 | release/v0.5 | v0.5 | v2.11 |
 | release/v0.4 | v0.4 | v2.10 |
 | release/v0.3 | v0.3 | v2.9 |