build(deps): bump DeterminateSystems/update-flake-lock from 25 to 26

---
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] <support@github.com>

Author: dependabot[bot]

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

@@ -15,7 +15,7 @@ jobs:
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v25
+        uses: DeterminateSystems/update-flake-lock@v26
         with:
           pr-labels: |
             merge-queue