update all cosign public key files/references in ublue-os org repos

[bsherman]

Due to cosign key rotation, all cosign pub key files in repos must be updated:

At the least, this includes files in:

• https://github.com/ublue-os/config - chore: update cosign public key config#296
• https://github.com/ublue-os/main - chore: update cosign public key #601
• https://github.com/ublue-os/hwe - refactor: update cosign public key hwe#261
• https://github.com/ublue-os/bazzite - refactor: update cosign public key bazzite#1314
• https://github.com/ublue-os/bluefin - refactor: update cosign public key bluefin#1483
• https://github.com/ublue-os/akmods - refactor: update cosign public key akmods#210
• https://github.com/ublue-os/ucore - refactor: update cosign public key ucore#169
• https://github.com/ublue-os/ucore-akmods - refactor: update cosign public key ucore-kmods#19
• https://github.com/ublue-os/fsync - refactor: update cosign public key kernel-cache#4
• https://github.com/ublue-os/toolboxes - refactor: update cosign public key toolboxes#109
• https://github.com/ublue-os/bazzite-arch - refactor: update cosign public key bazzite-arch#37
• https://github.com/ublue-os/arch-distrobox - refactor: update cosign public key arch-distrobox#5
• https://github.com/ublue-os/fedora-distrobox - refactor: update cosign public key fedora-distrobox#10
• ... ADD OTHER REPOS TO THIS LIST ...

[p5]

Images to attempt to resign (please add to this list as and when you think of them):

• From @HikariKnight - last f39 Bazzite due to Polaris cards

[bsherman]

I believe we've wrapped this up....

a few other repos were updated outside this ticket, but the situation has been resolved.