Do not squash commits

[t-bltg]

I shouldn't have squashed the PR in #4419 (the sanity check does not pass on master 😓), so here we go again.

using TOML

cd("Plots.jl")

for pkg ∈ ("RecipesBase", "RecipesPipeline", "Plots")
  versions = TOML.parsefile(joinpath(first(DEPOT_PATH), "registries", "General", pkg[1:1], pkg, "Versions.toml"))

  found = all(sort(collect(keys(versions)))) do version
    tree_sha = versions[version]["git-tree-sha1"]
    try
      readchomp(`git rev-parse -q --verify "$(tree_sha)^{tree}"`)
      return true
    catch
      return false
    end
  end
  println(pkg, ": ", found ? "all versions found!" : "ney")
end

[t-bltg]

Post-merge comment: sanity check works on master.