jgmenu: 0.8 -> 0.8.2

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2/bin/jgmenu -h` got 0 exit code
- ran `/nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2/bin/jgmenu --help` got 0 exit code
- ran `/nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2/bin/jgmenu --version` and found version 0.8.2
- ran `/nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2/bin/jgmenu_run --help` got 0 exit code
- found 0.8.2 with grep in /nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2
- found 0.8.2 in filename of file in /nix/store/1ggjwr61hd0yd99gra484q1dfwzm4k8r-jgmenu-0.8.2

cc "@romildo"