Add Ubuntu 26.04 "resolute" packaging support

[defanator]

Proposed changes

Add Ubuntu 26.04 "resolute" to packaging support. Closes #1735.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING document
• I have run make install-tools and have attached any dependency changes to this pull request
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• If applicable, I have updated any relevant documentation (README.md)
• If applicable, I have tested my cross-platform changes on Ubuntu 22, Redhat 8, SUSE 15 and FreeBSD 13

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.84%. Comparing base (308814b) to head (a37ed81).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1736      +/-   ##
==========================================
- Coverage   84.86%   84.84%   -0.02%     
==========================================
  Files         105      105              
  Lines       13621    13621              
==========================================
- Hits        11559    11557       -2     
- Misses       1539     1541       +2     
  Partials      523      523              

see 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 308814b...a37ed81. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.