Bump src/dea_next:

Bleicke and Tim Labeeuw (1):
      Bump buildpacks/vendor/nodejs:

Ryan Spore and Scott Calvert (3):
      Add git-core dependency to warden rootfs
      Update run config vars for Logplex
      Allow FileServer to serve buildpacks in git format

Ryan Spore and Tony Hansmann (1):
      Update DirServer port in test to avoid collisions with warden