meta: bump cachix/install-nix-action from 31.9.0 to 31.9.1

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 31.9.0 to 31.9.1.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Changelog](https://github.com/cachix/install-nix-action/blob/master/RELEASE.md)
- [Commits](cachix/install-nix-action@4e002c8...2126ae7)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-version: 31.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
PR-URL: #61910
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: dependabot[bot]

.github/workflows/linters.yml

@@ -149,7 +149,7 @@ jobs:
           persist-credentials: false
           sparse-checkout: '*.nix'
           sparse-checkout-cone-mode: false
-      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
+      - uses: cachix/install-nix-action@2126ae7fc54c9df00dd18f7f18754393182c73cd  # v31.9.1
       - name: Lint Nix files
         run: |
           nix-shell -I nixpkgs=./tools/nix/pkgs.nix -p 'nixfmt-tree' --run '

.github/workflows/test-shared.yml

@@ -165,7 +165,7 @@ jobs:
           tar xzf tarballs/*.tar.gz -C "$RUNNER_TEMP"
           echo "TAR_DIR=$RUNNER_TEMP/$(basename tarballs/*.tar.gz .tar.gz)" >> "$GITHUB_ENV"
 
-      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
+      - uses: cachix/install-nix-action@2126ae7fc54c9df00dd18f7f18754393182c73cd  # v31.9.1
         with:
           extra_nix_config: sandbox = true
 

.github/workflows/tools.yml

@@ -315,7 +315,7 @@ jobs:
           allow-prereleases: true
       - name: Set up Nix
         if: matrix.id == 'nixpkgs-unstable' && (github.event_name == 'schedule' || inputs.id == 'all' || inputs.id == matrix.id)
-        uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
+        uses: cachix/install-nix-action@2126ae7fc54c9df00dd18f7f18754393182c73cd  # v31.9.1
       - run: ${{ matrix.run }}
         if: github.event_name == 'schedule' || inputs.id == 'all' || inputs.id == matrix.id
         env: