Add windows-latest to CI

[mdedetrich]

No description provided.

[mdedetrich]

Blocked by scoverage/sbt-coveralls#294

[coveralls]

Pull Request Test Coverage Report for Build 10861161664

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 8 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.8%) to 88.189%

---

Files with Coverage Reduction	New Missed Lines	%
support/http-circe/src/main/scala/org/mdedetrich/pekko/http/support/CirceHttpSupport.scala	1	87.5%
support/stream-circe/src/main/scala/org/mdedetrich/pekko/stream/support/CirceStreamSupport.scala	1	86.96%
http-json/src/main/scala/org/mdedetrich/pekko/http/JsonSupport.scala	1	82.35%
stream-json/src/main/scala/org/mdedetrich/pekko/json/stream/JsonStreamParser.scala	5	78.33%

Totals
Change from base Build 10861135715:	-0.8%
Covered Lines:	112
Relevant Lines:	127

---

💛 - Coveralls