update action versions

.github/workflows/config.yaml

@@ -5,18 +5,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository and submodules
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         submodules: recursive
 
     - name: Install nix 2.3.6
-      uses: cachix/install-nix-action@v13
+      uses: cachix/install-nix-action@v19
       with:
         install_url: https://releases.nixos.org/nix/nix-2.3.6/install
         nix_path: nixpkgs=channel:nixos-unstable
 
     - name: Use maker and dapp cachix
-      uses: cachix/cachix-action@v10
+      uses: cachix/cachix-action@v12
       with:
         name: maker
         extraPullNames: dapp