Fill the cache on the first run of mvn, such that later jobs won't have cache misses

[DavyLandman]

Since GH actions commit the cache after the first job is completed, any follow up jobs that run more plugins/extension will have a cache miss.

[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 45%. Comparing base (df5416a) to head (743e969).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##              main   #2841   +/-   ##
=======================================
  Coverage       45%     45%           
+ Complexity    6727    6725    -2     
=======================================
  Files          844     844           
  Lines        67044   67044           
  Branches     10011   10011           
=======================================
+ Hits         30793   30795    +2     
- Misses       33864   33865    +1     
+ Partials      2387    2384    -3     

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