Merge pull request #591 from crytic/dependabot/github_actions/dev/cachix/install-nix-action-31

chore(deps): bump cachix/install-nix-action from 30 to 31

Author: elopez

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
         solc-select use 0.5.7 --always-install
     - name: Set up nix
       if: matrix.type == 'dapp'
-      uses: cachix/install-nix-action@v30
+      uses: cachix/install-nix-action@v31
     - name: Set up cachix
       if: matrix.type == 'dapp'
       uses: cachix/cachix-action@v16