[26.05] nixpkgs: bump revision to include grub updates

[osnyx]

pulls in flyingcircusio/nixpkgs#1119

PL-135139

@flyingcircusio/release-managers

Release process

• Created changelog entry using ./changelog.sh

PR release workflow (internal)

• PR has internal ticket
• internal issue ID (PL-…) part of branch name
• internal issue ID mentioned in PR description text
• ticket is on Platform agile board
• if ticket is more urgent than within the next few days, directly contact a member of the Platform team

• set urgency and risk labels
• ensure the merge bot has determined a merge date
• ensure all checks are green
• get a review from a colleague

Design notes

• Provide a feature toggle if the change might need to be adjusted/reverted quickly depending on context. Consider whether the default should be on or off. Example: rate limiting.
• All customer-facing features and (NixOS) options need to be discoverable from documentation. Add or update relevant documentation such that hosted and guided customers can understand it as well.

Security implications

• Security requirements defined? (WHERE)
  • improve resilience of grub reading boot files from an XFS partition
• Security requirements tested? (EVIDENCE)
  • in PL-135139, we were able to recover a stuck machine with these patches (25.11 branch)
  • smoke test: grub package builds with these patches
  • rebooting a machine has not been tried, we can be less strict about this development branch

[ctheune]

we could (and maybe should) wait for 26.05 to merge NixOS/nixpkgs#481112 ?