Release v1.2.4 on 2023-02-07.

1. f86d9b4 Fix CTRL_ATTR_FAMILY_ID attribute size by Harald Welte · 6 years ago
2. 4e3960c Add genl_socket_close() function by Harald Welte · 7 years ago
3. d2bb0bc Re-license the library as LGPLv2-or-later by Harald Welte · 8 years ago
4. 51b00a6 Add copright headers and license files, list Pablo as author by Harald Welte · 10 years ago
5. 1450666 add libgtpnl by Pablo Neira Ayuso · 10 years ago