Package stdlib locations as mvn://

[toinehartman]

This removes std:// locations in the published Rascal JARs, in favor of mvn:// pointing to this specific released version. Closes #2820.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46%. Comparing base (eeaf4bc) to head (42ea184).

Additional details and impacted files

@@                          Coverage Diff                           @@
##             feature/2817-remove-std-scheme/final   #2826   +/-   ##
======================================================================
- Coverage                                      46%     46%   -1%     
- Complexity                                   6728    6729    +1     
======================================================================
  Files                                         842     842           
  Lines                                       66796   66796           
  Branches                                     9983    9983           
======================================================================
- Hits                                        30799   30791    -8     
- Misses                                      33613   33620    +7     
- Partials                                     2384    2385    +1     

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