Update cachix/install-nix-action action to v31.10.7 (#717)

Author: renovate[bot]

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           persist-credentials: false
           fetch-depth: 0
-      - uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
       - uses: cachix/cachix-action@5f2d7c5294214f71b873db4b969586b980625e71 # v17
         with:
           name: devenv