Update Rust to 1.84.1 for our packages

[rgacogne]

Short description

don't merge this until a successful build has been done!

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Pull Request Test Coverage Report for Build 13332691165

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 58 unchanged lines in 13 files lost coverage.
• Overall coverage decreased (-7.2%) to 64.559%

---

Files with Coverage Reduction	New Missed Lines	%
pdns/packethandler.cc	1	72.75%
pdns/pollmplexer.cc	1	83.66%
pdns/recursordist/sortlist.cc	2	75.29%
pdns/iputils.cc	3	57.3%
pdns/misc.hh	3	83.81%
pdns/opensslsigners.cc	3	61.41%
pdns/recursordist/recpacketcache.hh	3	91.04%
pdns/recursordist/test-syncres_cc2.cc	3	89.03%
pdns/dnsdistdist/dnsdist.cc	4	68.79%
pdns/recursordist/syncres.cc	4	80.46%

Totals
Change from base Build 13332056893:	-7.2%
Covered Lines:	127686
Relevant Lines:	166873

---

💛 - Coveralls

[rgacogne]

Successful run at (except for EL-7 and Debian Buster, but that's unrelated to this change): https://github.com/rgacogne/pdns/actions/runs/13332701021