Fix a memory leak caused by the constness of the exceptionCause string in Yerbacon::Exception

src/headers/Yerbacon.hpp

@@ -18,7 +18,7 @@
 namespace Yerbacon {
     consteval const char* getVersion() noexcept { return YBCON_VERSION; }
     class Exception: public std::exception {
-        const std::string exceptionCause;
+        std::string exceptionCause;
     public:
         [[nodiscard]] const char* what() const noexcept final {
             return exceptionCause.data();