fix: nix profile install

Author: samrose

.github/workflows/testinfra-nix.yml

@@ -64,8 +64,7 @@ jobs:
 
       - name: Install yq & jq
         run: |
-          sudo apt-get update
-          sudo apt-get install -y yq jq
+          nix profile install nixpkgs#yq nixpkgs#jq
 
       - name: Generate common-nix.vars.pkr.hcl
         run: |