peco: 0.5.1 -> 0.5.2

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/57j66n7s9hxkrgbzvgxvrbvab1ipgakz-peco-0.5.2-bin/bin/peco -h` got 0 exit code
- ran `/nix/store/57j66n7s9hxkrgbzvgxvrbvab1ipgakz-peco-0.5.2-bin/bin/peco --help` got 0 exit code
- ran `/nix/store/57j66n7s9hxkrgbzvgxvrbvab1ipgakz-peco-0.5.2-bin/bin/peco --version` and found version 0.5.2
- found 0.5.2 with grep in /nix/store/57j66n7s9hxkrgbzvgxvrbvab1ipgakz-peco-0.5.2-bin
- found 0.5.2 in filename of file in /nix/store/57j66n7s9hxkrgbzvgxvrbvab1ipgakz-peco-0.5.2-bin

cc "@ehmry @lethalman"