Bump version to v3.0.0.rc4

Author: Matevz Morato

CMakeLists.txt

@@ -67,7 +67,7 @@ endif()
 # Create depthai project
 project(depthai VERSION "3.0.0" LANGUAGES CXX C)
 set(DEPTHAI_PRE_RELEASE_TYPE "rc") # Valid options are "alpha", "beta", "rc", ""
-set(DEPTHAI_PRE_RELEASE_VERSION "3")
+set(DEPTHAI_PRE_RELEASE_VERSION "4")
 
 # Set DEPTHAI_VERSION universally, not conditionally
 set(DEPTHAI_VERSION ${PROJECT_VERSION}-${DEPTHAI_PRE_RELEASE_TYPE}.${DEPTHAI_PRE_RELEASE_VERSION})