chore: start next Lake version

Author: tydeu

Diff for: Lake/Version.lean

@@ -8,9 +8,9 @@ namespace Lake
 
 def version.major := 3
 def version.minor := 2
-def version.patch := 1
+def version.patch := 2
 
-def version.isPrerelease := false
+def version.isPrerelease := true
 def version.isRelease := !isPrerelease
 def version.specialDesc := if isPrerelease then "pre" else ""