Bump DeterminateSystems/update-flake-lock from 25 to 26 (#1876)

Bumps [DeterminateSystems/update-flake-lock](https://github.com/determinatesystems/update-flake-lock) from 25 to 26.
- [Release notes](https://github.com/determinatesystems/update-flake-lock/releases)
- [Commits](DeterminateSystems/update-flake-lock@v25...v26)

---
updated-dependencies:
- dependency-name: DeterminateSystems/update-flake-lock
  dependency-version: '26'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/update-flake-lock.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: cachix/install-nix-action@v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable
-      - uses: DeterminateSystems/update-flake-lock@v25
+      - uses: DeterminateSystems/update-flake-lock@v26
         with:
           pr-labels: |
             dependencies