chore(deps): update nix-community/cache-nix-action action to v7.0.2 (#781)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/update_hashes.yml

@@ -18,7 +18,7 @@ jobs:
           determinate: true
 
       - name: Nix binary cache
-        uses: nix-community/cache-nix-action@106bba72ed8e29c8357661199511ef07790175e9 # v7.0.1
+        uses: nix-community/cache-nix-action@7df957e333c1e5da7721f60227dbba6d06080569 # v7.0.2
         with:
           # restore and save a cache using this key
           primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}