Improve SupportedVCS.parse

[fthomas]

No description provided.

[codecov]

Codecov Report

Merging #1725 (2c848e6) into master (538d8ab) will increase coverage by 0.19%.
The diff coverage is 90.00%.

@@            Coverage Diff             @@
##           master    #1725      +/-   ##
==========================================
+ Coverage   74.04%   74.23%   +0.19%     
==========================================
  Files         115      115              
  Lines        1957     1956       -1     
  Branches       55       55              
==========================================
+ Hits         1449     1452       +3     
+ Misses        508      504       -4     

Impacted Files	Coverage Δ
.../scala/org/scalasteward/core/application/Cli.scala	96.15% <66.66%> (-3.85%)	⬇️
...g/scalasteward/core/application/SupportedVCS.scala	100.00% <100.00%> (+38.46%)	⬆️

---

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 538d8ab...2c848e6. Read the comment docs.