Fix flake rev issue

[Lagoja]

Summary

Nix flake fails to build with:

       error: attribute 'dirtyShortRev' missing
       at /nix/store/m5mqwkz0ss2cav2c9663mx8vwsmvcas3-source/flake.nix:21:28:
           20|               then "${x}-${self.shortRev}"
           21|               else "${x}-${self.dirtyShortRev}")
             |                            ^
           22|         ];

This fixes the issue

How was it tested?

nix build github:jetify-com/devbox/jl/fix-flake-rev