Revert "Set the org.gradle.dependency.bundling attribute to external"

[3flex]

Reverts #3738

See #3743 & #3747. The workaround won't be necessary now we're back to publishing a single variant with the attribute "org.gradle.usage": "java-runtime"

[codecov]

Codecov Report

Merging #3750 (ba231a2) into main (61cb0b6) will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #3750      +/-   ##
============================================
+ Coverage     78.67%   78.70%   +0.02%     
  Complexity     2888     2888              
============================================
  Files           473      473              
  Lines          9309     9306       -3     
  Branches       1704     1704              
============================================
  Hits           7324     7324              
+ Misses         1080     1077       -3     
  Partials        905      905              

Impacted Files	Coverage Δ	Complexity Δ
...kotlin/io/gitlab/arturbosch/detekt/DetektPlugin.kt	6.25% <ø> (+0.36%)	0.00 <0.00> (ø)

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[cortinico]

Thanks for taking care of this @3flex 🙏