fix: Nix & Devbox installer bumps

Author: kaiwalyajoshi

.github/workflows/build-on-demand.yaml

@@ -27,10 +27,10 @@ jobs:
           sudo apt-get install xz-utils
 
       - name: Install NIX
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@v31
 
       - name: Install devbox
-        uses: jetify-com/devbox-install-action@v0.11.0
+        uses: jetify-com/devbox-install-action@v0.14.0
         with:
           enable-cache: true
           skip-nix-installation: "true"