Always use a single space for and combinator

[fredden]

This pull request is a small part of #756. This change should not introduce any controversy.

• *and- constraints are always separated by a single space ( ), never a comma (,)

Related to #756

[codecov]

Codecov Report

Merging #819 (d1e7cd7) into main (15c0c9a) will not change coverage.
The diff coverage is n/a.

❗ Current head d1e7cd7 differs from pull request most recent head 4df293a. Consider uploading reports for the commit 4df293a to get more accurate results

@@            Coverage Diff            @@
##               main     #819   +/-   ##
=========================================
  Coverage     98.06%   98.06%           
  Complexity      135      135           
=========================================
  Files            28       28           
  Lines           413      413           
=========================================
  Hits            405      405           
  Misses            8        8           

Impacted Files	Coverage Δ
...rc/Vendor/Composer/VersionConstraintNormalizer.php	96.42% <ø> (ø)

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[localheinz]

👍

[localheinz]

Thank you, @fredden!