nftables: 0.8 -> 0.8.2

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft -h` got 0 exit code
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft --help` got 0 exit code
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft -v` and found version 0.8.2
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft --version` and found version 0.8.2
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft -h` and found version 0.8.2
- ran `/nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2/bin/nft --help` and found version 0.8.2
- found 0.8.2 with grep in /nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2
- found 0.8.2 in filename of file in /nix/store/ahcr1zyg4sp38rwch6vvvziwm9afj2ja-nftables-0.8.2

cc "@wkennington"