gitea: 1.21.10 -> 1.21.11

[Ma27]

Description of changes

ChangeLog: https://github.com/go-gitea/gitea/releases/tag/v1.21.11

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[Ma27]

Added the security label as a precaution, not sure what to think of go-gitea/gitea#30315 though.
cc @techknowlogick is that worth a backport to 1.20/23.11?

[techknowlogick]

@Ma27 yes, a backport for this is worth it. lmk if you'd like me to do it. The patch from that linked PR should(tm) apply cleanly to 1.20.

[Ma27]

@techknowlogick from my understanding the interesting part of the PR linked above was that CSP is now set in any case, correct?
The patch didn't apply cleanly, but I patched the relevant portion manually in #304820.
A review would be greatly appreciated.