build: suppress CryptoPP warnings

Change-Id: I52e93fb18c42cf72d73c4477dc4a8093a5221215
diff --git a/src/security/certificate.cpp b/src/security/certificate.cpp
index 931a40e..eb45d6f 100644
--- a/src/security/certificate.cpp
+++ b/src/security/certificate.cpp
@@ -13,9 +13,7 @@
 #include "../util/logging.hpp"
 #include "../util/time.hpp"
 
-#include <cryptopp/asn.h>
-#include <cryptopp/base64.h>
-#include <cryptopp/files.h>
+#include "cryptopp.hpp"
 
 #include "../encoding/cryptopp/asn_ext.hpp"