[MISC] gcc-10.3 supports SEQAN3_WORKAROUND_GCC_99318 now

[marehr]

Part of release checklist (#2334)

Go through workarounds and re-evaluate them. This workaround is apparently fixed since gcc-10.3 so let's see :)

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/seqan/seqan3/HDvX3BjDkLsBbBaw6EYSgqeCtV2n
✅ Preview: https://seqan3-git-fork-marehr-removeworkarounds3-seqan.vercel.app

[codecov]

Codecov Report

Merging #2626 (ff61cb6) into master (77c5e8a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2626   +/-   ##
=======================================
  Coverage   98.27%   98.27%           
=======================================
  Files         273      273           
  Lines       10795    10795           
=======================================
  Hits        10609    10609           
  Misses        186      186           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 77c5e8a...ff61cb6. Read the comment docs.