File spicy-flex.patch of Package zeek

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff147e2ed..b123f811f 100644
--- a/auxil/spicy/spicy/CMakeLists.txt
+++ b/auxil/spicy/spicy/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 3.15.0)
 
 project(spicy LANGUAGES ASM C CXX)
 
-set(flex_minimum_version "2.6")
+set(flex_minimum_version "2.5.37")
 set(bison_minimum_version "3.0")
 set(python_minimum_version "3.2")
 set(macos_minimum_version "19.0.0") # macOS 10.15.0 (Catalina)