SemVer.parse: filter inside the for comprehension

[fthomas]

No description provided.

[codecov]

Codecov Report

Merging #570 into master will decrease coverage by 0.05%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #570      +/-   ##
==========================================
- Coverage   58.09%   58.04%   -0.06%     
==========================================
  Files          65       65              
  Lines         821      820       -1     
  Branches       39       34       -5     
==========================================
- Hits          477      476       -1     
  Misses        344      344

Impacted Files	Coverage Δ
...ain/scala/org/scalasteward/core/model/SemVer.scala	100% <100%> (ø)	⬆️
...main/scala/org/scalasteward/core/util/string.scala	80.76% <100%> (+0.76%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6ae4000...f3eca21. Read the comment docs.