update spack2 v2 to spack2 v3

[Yurlungur]

PR Summary

Update to spack2 v3. This involves updating the spackage, as well as updating the cmake.

PR Checklist

• Code is formatted. (You can use the format_spiner make target.)
• Adds a test for any bugs fixed. Adds tests for new features.
• If preparing for a new release, update the version in cmake.

[dholladay00]

I know this is scope creep but I'm looking right now at doing this, would you be willing to add a test variant to the spackage and make catch an optional dependency @Yurlungur ?

[Yurlungur]

I know this is scope creep but I'm looking right now at doing this, would you be willing to add a test variant to the spackage and make catch an optional dependency @Yurlungur ?

Will do that's an easy change.

[Yurlungur]

Tests pass and @mauneyc-LANL approved it so I'm clicking the button.