x11/hyprpaper: unbreak build with GCC after f2258673f15e

/usr/local/bin/ld: CMakeFiles/hyprpaper.dir/src/Hyprpaper.cpp.o: in function `CHyprpaper::createLSForMonitor(SMonitor*)':
Hyprpaper.cpp:(.text+0xb27): undefined reference to `std::1::vector_base_common<true>::throw_length_error() const'
/usr/local/bin/ld: CMakeFiles/hyprpaper.dir/src/Hyprpaper.cpp.o: in function `CHyprpaper::createPoolFile(unsigned long, std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> >&)':
Hyprpaper.cpp:(.text+0xc01): undefined reference to `std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> >::append(char const*)'
/usr/local/bin/ld: CMakeFiles/hyprpaper.dir/src/Hyprpaper.cpp.o: in function `CHyprpaper::createBuffer(SPoolBuffer*, int, int, unsigned int)':
Hyprpaper.cpp:(.text+0xf25): undefined reference to `std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> >::operator=(std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> > const&)'
/usr/local/bin/ld: CMakeFiles/hyprpaper.dir/src/Hyprpaper.cpp.o: in function `CHyprpaper::ensurePoolBuffersPresent()':
Hyprpaper.cpp:(.text+0x1162): undefined reference to `std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> >::operator=(std::1::basic_string<char, std::1::char_traits<char>, std::1::allocator<char> > const&)'
/usr/local/bin/ld: Hyprpaper.cpp:(.text+0x15d1): undefined reference to `std::1::vector_base_common<true>::throw_length_error() const'
/usr/local/bin/ld: CMakeFiles/hyprpaper.dir/src/Hyprpaper.cpp.o: in function `CHyprpaper::removeOldHyprpaperImages()':
Hyprpaper.cpp:(.text+0x18cb): undefined reference to `std::1::fs::filesystem::directory_iterator::directory_iterator(std::1::fs::filesystem::path const&, std::1::error_code*, std::1::__fs::filesystem::directory_options)'
[...]