libdigidocpp: 3.12.0.1317 -> 3.13.3.1365

Semi-automatic update. These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 3.13.3.1365 with grep in /nix/store/bh5cizakj0dkmmwqqg4bvmhyvqd8x28n-libdigidocpp-3.13.3.1365
- found 3.13.3.1365 in filename of file in /nix/store/bh5cizakj0dkmmwqqg4bvmhyvqd8x28n-libdigidocpp-3.13.3.1365