Add dprint to install-tools task.

[egithinji]

As mentioned in CONTRIBUTING.md, dprint is used for formatting in the project. This PR adds dprint to the list of packages that are installed when one runs cargo xtask install-tools.

[djmitche]

I suspect the build failures were some sort of intermittent? I can't merge without them passing, but if necessary someone with admin privileges can.

[egithinji]

I suspect the build failures were some sort of intermittent? I can't merge without them passing, but if necessary someone with admin privileges can.

Not sure but might be related to rust-lang/rust#143835. So as not to break the CI might be better if it's resolved first. I'll keep an eye on it and dig deeper when I get a chance.

[egithinji]

Once dprint/dprint#1021 lands, we can upgrade our dprint version and I believe this should fix the build issues.

[mgeisler]

Once dprint/dprint#1021 lands, we can upgrade our dprint version and I believe this should fix the build issues.

The PR is merged, but I didn't check if there is a new release yet.

[michael-kerscher]

@egithinji I just checked there is a new release https://github.com/dprint/dprint/releases/tag/0.50.2 with that PR included