ci: running chain tests in parallel on gh infra

[mrq1911]

No description provided.

[github-actions]

Crate versions that have been updated:

• basilisk-runtime: v24.0.0 -> v25.0.0
• testing-basilisk-runtime: v24.0.0 -> v25.0.0

Runtime versions don't match.

Runtime version has been increased.

[codecov]

Codecov Report

Merging #279 (27ba10c) into ci-test-upgrade (8cfcc67) will not change coverage.
The diff coverage is n/a.

@@               Coverage Diff                @@
##           ci-test-upgrade     #279   +/-   ##
================================================
  Coverage            83.54%   83.54%           
================================================
  Files                   21       21           
  Lines                 2109     2109           
================================================
  Hits                  1762     1762           
  Misses                 347      347           

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