livebook: 0.14.5 -> 0.14.7 (#378598)

Co-authored-by: scvalex <[e-mail]>

pkgs/by-name/li/livebook/package.nix

···
 }:
 beamPackages.mixRelease rec {
   pname = "livebook";
-  version = "0.14.5";
+  version = "0.14.7";
 
   inherit elixir;
 
···
     owner = "livebook-dev";
     repo = "livebook";
     tag = "v${version}";
-    hash = "sha256-VSxW+X5zt6npV4tVVgTEvQhjA+jTramSX5h92BWWaQM=";
+    hash = "sha256-8/u/1I3pSfxyF35ZnqClR7FXPL2rhBDdf4w/KUGjVVs=";
   };
 
   mixFodDeps = beamPackages.fetchMixDeps {