chore: update cachix/cachix-action

Author: RadxaYuntian

.github/workflows/docs.yaml

@@ -38,7 +38,7 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@v26
       - name: Use cachix
-        uses: cachix/cachix-action@v14
+        uses: cachix/cachix-action@v16
         with:
           name: devenv
       - name: Install devenv.sh

src/share/rsdk/infra-package/.github/workflows/docs.yaml.jsonnet

@@ -54,7 +54,7 @@ function(
                     },
                     {
                         name: "Use cachix",
-                        uses: "cachix/cachix-action@v14",
+                        uses: "cachix/cachix-action@v16",
                         with: {
                             name: "devenv",
                         },