bad version check, now really enforcing Crypto++ to 5.6.2 minimum

cmake/EthDependencies.cmake

@@ -41,11 +41,9 @@ message(STATUS "ctest path: ${CTEST_COMMAND}")
 
 # Dependencies must have a version number, to ensure reproducible build. The version provided here is the one that is in the extdep repository. If you use system libraries, version numbers may be different.
 
-if (CRYPTOPP_FOUND)
-    # find_package (CryptoPP 5.6.2 REQUIRED)
-    message(" - CryptoPP header: ${CRYPTOPP_INCLUDE_DIRS}")
-    message(" - CryptoPP lib   : ${CRYPTOPP_LIBRARIES}")
-endif()
+find_package (CryptoPP 5.6.2 REQUIRED)
+message(" - CryptoPP header: ${CRYPTOPP_INCLUDE_DIRS}")
+message(" - CryptoPP lib   : ${CRYPTOPP_LIBRARIES}")
 
 find_package (LevelDB REQUIRED)
 message(" - LevelDB header: ${LEVELDB_INCLUDE_DIRS}")