Fix publish workflow

[divergentdave]

This fixes two problems with the publish workflow. First, npm build does not work, as we need to use the npm run command instead to hit our package script. Secondly, we need to build before running tests, because intra-workspace package imports need the dist subdirectories to exist.

[jbr]

Sorry I missed the npm build — That's literally the only thing I miss about yarn

[coveralls]

Pull Request Test Coverage Report for Build 6202071022

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 90.94%

---

Totals
Change from base Build 6201131084:	0.0%
Covered Lines:	3445
Relevant Lines:	3750

---

💛 - Coveralls