fix: add missing algorithm header include (#380)

* https://gcc.gnu.org/gcc-14/porting_to.html

Using gcc 14 uncovers a missing include in Message.h

Signed-off-by: Alfred Wingate <parona@protonmail.com>

include/sdbus-c++/Message.h

@@ -42,6 +42,7 @@
 #include <cassert>
 #include <functional>
 #include <sys/types.h>
+#include <algorithm>
 
 // Forward declarations
 namespace sdbus {