version: bump patch number

Change-Id: I5aed34c2368f0b523e74e178498eee539c2968f9
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c03a802..acc3fde 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,7 @@
 #
 set(PT_VERSION_MAJOR 2)
 set(PT_VERSION_MINOR 0)
-set(PT_VERSION_PATCH 3)
+set(PT_VERSION_PATCH 4)
 set(PT_VERSION_BUILD "0" CACHE STRING "")
 set(PT_VERSION_EXT "" CACHE STRING "")