[doc] fix sonatype link and token generation instruction

[ps-mir]

RELEASING.md still points to decommissioned OSSRH. Fixing the URL as well as the instructions. Addresses build(daily) failure 185 in issue #8447

Error details for lychee in Build (daily) #185, lint-check

[RELEASING.md]:
[404] https://oss.sonatype.org/ (at 83:8) | Rejected status code: 404 Not Found

🔍 1021 Total (in 11s 48ms) 🔗 960 Unique ✅ 278 OK 🚫 1 Error 👻 742 Excluded 🔀 10 Redirects

Hint: Followed 10 redirects. You might want to consider replacing redirecting URLs with the resolved URLs. Use verbose mode (`-v`/`-vv`) to see redirection details.
Hint: You can configure accepted/rejected response codes with `-a` or `--accept`

flint: 1 check failed (lychee)
💡 Try `flint run --fix` to auto-fix lint issues, then re-run `flint run` to verify.
[lint:links] ERROR task failed
Error: Process completed with exit code 1.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.02%. Comparing base (aa2ca12) to head (ff37e76).
⚠️ Report is 313 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8455      +/-   ##
============================================
+ Coverage     90.16%   91.02%   +0.85%     
- Complexity     7475     7819     +344     
============================================
  Files           836      893      +57     
  Lines         22551    23721    +1170     
  Branches       2224     2364     +140     
============================================
+ Hits          20333    21591    +1258     
+ Misses         1515     1409     -106     
- Partials        703      721      +18     

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[jack-berg]

Thanks!

[otelbot]

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