d422dd94

By: Michael Lynch <git@mtlynch.io>

Dedupe the pinned Lexbor revision in flake.nix

The Lexbor commit hash was hardcoded three times (fetchgit's rev plus
two vendored dep paths); factor it into a single lazyHtmlLexborRev
binding so it only needs to change in one place.
check-bashcheck-elixircheck-frontendcheck-trailing-newlinecheck-trailing-whitespacedefaulte2e-testsconfiguredevShellx86_64-linuxcheck-bashcheck-elixircheck-frontendcheck-trailing-newlinecheck-trailing-whitespacedefaulte2e-testsmikevillex86_64-linux