[#3010] Added an opt-in step that reclaims preinstalled runner toolchains in GitHub Actions jobs. - #3011

  4 files  ±0   42 suites  ±0   2m 22s ⏱️ +3s
393 tests ±0  393 ✅ ±0  0 💤 ±0  0 ❌ ±0 
546 runs  ±0  546 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 53e69dd. ± Comparison against earlier commit 6f164cf.