[28.x] Finalize 28.4 #34758

1. 
   achow101 commented at 4:34 pm on March 6, 2026: member
2. build: bump version to v28.4 2646feec1d
3. doc: Update manpages for v28.4 8599b5a6b7
4. doc: Update release notes for v28.4 a7748271b3
5. achow101 added this to the milestone 28.4 on Mar 6, 2026
6. DrahtBot added the label Backport on Mar 6, 2026
7. 
   DrahtBot commented at 4:35 pm on March 6, 2026: contributor

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Contributors
achow101 DrahtBot

Labels
Backport

Milestone
28.4