Don't depend on scala-collection-compat when using Scala >= 2.13

[jpablo]

Counterpart of #1275

[codecov-commenter]

Codecov Report

Merging #1276 (48fb9e3) into main (eff1be2) will increase coverage by 0.14%.
The diff coverage is 86.53%.

@@            Coverage Diff             @@
##             main    #1276      +/-   ##
==========================================
+ Coverage   59.48%   59.63%   +0.14%     
==========================================
  Files          69       70       +1     
  Lines        2446     2450       +4     
  Branches       81       70      -11     
==========================================
+ Hits         1455     1461       +6     
+ Misses        991      989       -2     

Impacted Files	Coverage Δ
zio-http/src/main/scala/zhttp/http/Http.scala	63.80% <0.00%> (ø)
zio-http/src/main/scala/zhttp/http/package.scala	100.00% <ø> (ø)
zio-http/src/main/scala/zhttp/http/Path.scala	79.16% <79.16%> (ø)
zio-http/src/main/scala/zhttp/http/Scheme.scala	70.96% <87.50%> (+2.00%)	⬆️
zio-http/src/main/scala/zhttp/http/Cookie.scala	82.48% <100.00%> (ø)
...io-http/src/main/scala/zhttp/http/PathSyntax.scala	100.00% <100.00%> (ø)
zio-http/src/main/scala/zhttp/http/URL.scala	86.95% <100.00%> (ø)
...ain/scala/zhttp/service/ServerResponseWriter.scala	88.37% <100.00%> (ø)

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[tusharmath]

Thanks!