apktool: 2.3.0 -> 2.3.1

Semi-automatic update. These checks were done:

- built on NixOS
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool -h` got 0 exit code
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool --help` got 0 exit code
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool help` got 0 exit code
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool -V` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool -v` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool --version` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool version` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool -h` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool --help` and found version 2.3.1
- ran `/nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1/bin/apktool help` and found version 2.3.1
- found 2.3.1 with grep in /nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1
- found 2.3.1 in filename of file in /nix/store/h8i3bh2ka65cj2ddfmvq2fv7wldsprk4-apktool-2.3.1