ci(dnsdist): Build and test on arm64/aarch64

[pieterlexis]

Short description

This draft-PR exists to see if we can build dnsdist in CI on arm64 as well.

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• 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)

[pieterlexis]

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

Discussion: Do we want to create an arm64 powerdns/base-pdns-ci-image/debian-12-pdns-base image?

CC: @romeroalx and @aerique as I expect them to be the ones maintaining those

[coveralls]

Pull Request Test Coverage Report for Build 18834649492

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.
• 55 unchanged lines in 15 files lost coverage.
• Overall coverage increased (+4.2%) to 73.012%

---

Files with Coverage Reduction	New Missed Lines	%
pdns/dnsdistdist/dnsdist-ipcrypt2.hh	1	50.0%
pdns/recursordist/recursor_cache.cc	1	81.66%
pdns/recursordist/rec-eventtrace.hh	2	50.25%
pdns/sstuff.hh	2	62.02%
modules/gpgsqlbackend/spgsql.cc	3	67.94%
pdns/iputils.hh	3	77.03%
pdns/opensslsigners.cc	3	61.27%
pdns/recursordist/recpacketcache.hh	3	89.55%
pdns/stubresolver.cc	3	77.02%
pdns/tsigverifier.cc	3	77.22%

Totals
Change from base Build 18747476088:	4.2%
Covered Lines:	127456
Relevant Lines:	163860

---

💛 - Coveralls

[romeroalx]

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

Discussion: Do we want to create an arm64 powerdns/base-pdns-ci-image/debian-12-pdns-base image?

CC: @romeroalx and @aerique as I expect them to be the ones maintaining those

Yes, makes sense. I'm preparing a PR making the base image multi-arch

[romeroalx]

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

Discussion: Do we want to create an arm64 powerdns/base-pdns-ci-image/debian-12-pdns-base image?
CC: @romeroalx and @aerique as I expect them to be the ones maintaining those

Yes, makes sense. I'm preparing a PR making the base image multi-arch

@pieterlexis Images are now available for both amd64 and arm64

[pieterlexis]

Thanks Alexis, I've restarted the workflow to see what else I'd need to fix to make this happen!