Merge pull request #212 from tweag/renovate/cachix-install-nix-action-31.x

chore(deps): update cachix/install-nix-action action to v31.9.0

Author: mergify[bot]

.github/workflows/workflow.yaml

@@ -42,7 +42,7 @@ jobs:
         with:
           path: ~/repo-cache
           key: repo-cache-${{ runner.os }}-nixpkgs-${{ env.cache-version }}
-      - uses: cachix/install-nix-action@0b0e072294b088b73964f1d72dfdac0951439dbd # v31.8.4
+      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31.9.0
         with:
           nix_path: nixpkgs=./nixpkgs.nix
       - uses: tweag/configure-bazel-remote-cache-auth@144b0b915f13a418f5eafe2f68d19564ec136c62 # v0.1.1