mariadb: fix gcc 13 building

mariadb: fix gcc 13 building

fixes:
FAILED: tpool/CMakeFiles/tpool.dir/aio_liburing.cc.o
/usr/src/openwrt/staging_dir/toolchain-x86_64_gcc-13.1.0_musl/bin/x86_64-openwrt-linux-musl-g++ -DDBUG_TRACE -DHAVE_CONFIG_H -DHAVE_URING -D_FILE_OFFSET_BITS=64 -I/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/wsrep-lib/include -I/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/wsrep-lib/wsrep-API/v26 -I/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/include -I/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/include/providers -I/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/tpool -Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -fmacro-prefix-map=/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3=mariadb-10.9.3 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro   -I/usr/src/openwrt/staging_dir/toolchain-x86_64_gcc-13.1.0_musl/usr/include -I/usr/src/openwrt/staging_dir/toolchain-x86_64_gcc-13.1.0_musl/include/fortify -I/usr/src/openwrt/staging_dir/toolchain-x86_64_gcc-13.1.0_musl/include -DNDEBUG -DDBUG_OFF -std=gnu++11 -DHAVE_IO_URING_MLOCK_SIZE -MD -MT tpool/CMakeFiles/tpool.dir/aio_liburing.cc.o -MF tpool/CMakeFiles/tpool.dir/aio_liburing.cc.o.d -o tpool/CMakeFiles/tpool.dir/aio_liburing.cc.o -c /usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/tpool/aio_liburing.cc
/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/tpool/aio_liburing.cc: In constructor '{anonymous}::aio_uring::aio_uring(tpool::thread_pool*, int)':
/usr/src/openwrt/build_dir/target-x86_64_musl/mariadb-10.9.3/tpool/aio_liburing.cc:64:18: error: 'runtime_error' is not a member of 'std'
   64 |       throw std::runtime_error("aio_uring()");

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>