Temporarily switch to boost::regex

In combination with musl, parser crashed. glibc fine. Could not pinpoint
down the exact reason mainly due to time constraints. Strange, in both
cases actually libstdc++ is used, so this is very odd.

utils.h

@@ -8,6 +8,7 @@
 #include <map>
 #include <regex>
 #include <ctime>
+#include <boost/regex.hpp>
 namespace utils
 {
 
@@ -61,7 +62,7 @@ namespace utils
 		return result;
 	}
 
-	std::string regex_callback_replacer(std::regex regex, const std::string &input, std::function<std::string(std::smatch&)> callback );
+	std::string regex_callback_replacer(boost::regex regex, const std::string &input, std::function<std::string(boost::smatch&) > callback);
 
 	std::string readCompleteFile(std::string_view filepath);