Incorrectly suggesting version bump for Tar.jl package

We have a compat entry for Tar.jl `Tar = "1.10"`. CompatHelper always suggests the change `Tar = "1.10, 1"`. I think this is because the latest version of Tar in the General registry is 1.9.2. Tar 1.10 is supplied as a stdlib.

if we look at CompatHelper's understanding:

```julia
DepInfo(Package("Tar", UUID("a4e569a6-e804-4fa4-b0f3-eef7a1d5b13e")), v"1.9.2", VersionSpec("1.10.0-1"), "1.10")
```

It thinks the latest version is 1.9.2. I haven't confirmed but I would guess this is why CompatHelper suggests the version bump to `1.10, 1`. So somehow we need to get ComatHelper to understand Tar 1.10 is shipped with Julia? Or maybe Tar 1.10 should be in General?