Update test_sbomnix action dependencies

Signed-off-by: Henri Rosten <henri.rosten@unikie.com>

.github/workflows/test_sbomnix.yml

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-name: Test sbomnix 
+name: Test sbomnix
 
 on:
   push:
@@ -16,11 +16,13 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v22
+      - uses: actions/checkout@v4.2.0
+      - uses: cachix/install-nix-action@v30
         with:
           nix_path: nixpkgs=channel:nixpkgs-unstable
-      - name: Make sure nix-build works
+      - name: Ensure nix-build works
         run: nix-build '<nixpkgs>' -A hello
-      - name: Run sbomnix CI tests
+      - name: Print nix version
+        run: nix --version
+       - name: Run sbomnix CI tests
         run: nix develop --command make test-ci