Gradle Plugin tests should access also Maven Local

[cortinico]

While preparing RC3, I noticed that Gradle plugin tests are failing once you bump version, even if you have the artifact on Maven Local.

Steps to reproduce:

• Bump buildSrc/src/main/kotlin/Versions.kt
• Run gradle publishToMavenLocal
• Run gradle build

Tests are failing with:

    Caused by: org.gradle.internal.resolve.ModuleVersionNotFoundException: Could not find io.gitlab.arturbosch.detekt:detekt-cli:1.16.0-RC3.
    Searched in the following locations:
      - https://repo.maven.apache.org/maven2/io/gitlab/arturbosch/detekt/detekt-cli/1.16.0-RC3/detekt-cli-1.16.0-RC3.pom
      - https://jcenter.bintray.com/io/gitlab/arturbosch/detekt/detekt-cli/1.16.0-RC3/detekt-cli-1.16.0-RC3.pom
    Required by:
        project :

    * Get more help at https://help.gradle.org
    BUILD FAILED in 1s

[codecov]

Codecov Report

Merging #3510 (2fa1b45) into master (c5f65a9) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #3510      +/-   ##
============================================
- Coverage     77.63%   77.61%   -0.02%     
- Complexity     2814     2817       +3     
============================================
  Files           462      462              
  Lines          8709     8720      +11     
  Branches       1688     1692       +4     
============================================
+ Hits           6761     6768       +7     
  Misses         1036     1036              
- Partials        912      916       +4     

Impacted Files	Coverage Δ	Complexity Δ
...s/exceptions/ThrowingNewInstanceOfSameException.kt	50.00% <0.00%> (-5.56%)	7.00% <0.00%> (+3.00%)	⬇️
...bosch/detekt/rules/complexity/MethodOverloading.kt	91.42% <0.00%> (-1.43%)	5.00% <0.00%> (+1.00%)	⬇️
...b/arturbosch/detekt/rules/style/UseCheckNotNull.kt	90.00% <0.00%> (-0.91%)	4.00% <0.00%> (-1.00%)

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