ci: bump DeterminateSystems/update-flake-lock from 24 to 25 (#7092)

Bumps [DeterminateSystems/update-flake-lock](https://github.com/determinatesystems/update-flake-lock) from 24 to 25.
- [Release notes](https://github.com/determinatesystems/update-flake-lock/releases)
- [Commits](https://github.com/determinatesystems/update-flake-lock/compare/v24...v25)

---
updated-dependencies:
- dependency-name: DeterminateSystems/update-flake-lock
  dependency-version: '25'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/update-flake.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@v31
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v24
+        uses: DeterminateSystems/update-flake-lock@v25
         with:
           token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
           pr-labels: dependencies