Keep META-INF folder at top of published mockito-core jar

[hdecarne]

This solves issue #2108 by adapting the Jar entries sorting order in the OSGI plugin workaround. As a result META-INF folder is kept at the top of the Jar as expected by JarInputStream:

Archive:  build/libs/mockito-core-3.6.24.jar
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  02-01-1980 00:00   META-INF/
     4619  02-01-1980 00:00   META-INF/MANIFEST.MF
     1080  02-01-1980 00:00   LICENSE
        0  02-01-1980 00:00   org/

instead of:

Archive:  ~/.gradle/caches/modules-2/files-2.1/org.mockito/mockito-core/3.6.0/48657987075fea2e2176634ae35aaa5e93c929ef/mockito-core-3.6.0.jar
  Length      Date    Time    Name
---------  ---------- -----   ----
     1080  02-01-1980 01:00   LICENSE
        0  02-01-1980 01:00   META-INF/
     4606  02-01-1980 01:00   META-INF/MANIFEST.MF
        0  02-01-1980 01:00   org/

[codecov-io]

Codecov Report

Merging #2109 (100760f) into release/3.x (78b22fc) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             release/3.x    #2109   +/-   ##
==============================================
  Coverage          84.89%   84.89%           
  Complexity          2720     2720           
==============================================
  Files                325      325           
  Lines               8277     8277           
  Branches             989      989           
==============================================
  Hits                7027     7027           
  Misses               981      981           
  Partials             269      269           

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[TimvdLippe]

Thanks for the fix!