bump nim-chronos to `dc3847e4d6733dfc3811454c2a9c384b87343e26`

[etan-status]

• fix results import
• Fixes compilation issues in v3 compatibility mode (-d:chronosHandleException)
• pretty-printer for Duration
• update ci.yml and be more explicit in .nimble
• Fix tests to be string hash order independent
• add ubuntu 24 and gcc 14

[github-actions[bot]]

Unit Test Results

         9 files  ±0    1 334 suites  ±0   30m 14s :stopwatch: - 3m 14s   5 000 tests ±0    4 652 :heavy_check_mark: ±0  348 :zzz: ±0  0 :x: ±0  20 880 runs  ±0  20 476 :heavy_check_mark: ±0  404 :zzz: ±0  0 :x: ±0 

Results for commit 56fd6138. ± Comparison against base commit 09f38826.