fix(ci): use correct SHA for nix-quick-install-action v30

Author: ryoppippi

.github/actions/setup-nix/action.yaml

@@ -13,7 +13,7 @@ runs:
   using: 'composite'
   steps:
     - name: Install Nix
-      uses: nixbuild/nix-quick-install-action@c245e13f8a7be373da8a36b4adcce5e0cb7dd3a2 # v30
+      uses: nixbuild/nix-quick-install-action@5bb6a3b3abe66fd09bbf250dce8ada94f856a703 # v30
 
     - name: Install tools from nixpkgs
       shell: bash