Bump cilium/little-vm-helper from 0.0.3 to 0.0.4

Bumps [cilium/little-vm-helper](https://github.com/cilium/little-vm-helper) from 0.0.3 to 0.0.4.
- [Commits](cilium/little-vm-helper@0b7d715...657fd0d)

---
updated-dependencies:
- dependency-name: cilium/little-vm-helper
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/test.yml

@@ -71,7 +71,7 @@ jobs:
           path: pwru
 
       - name: Run tests
-        uses: cilium/little-vm-helper@0b7d7157dae56a44dc531c852e7756dc671071af
+        uses: cilium/little-vm-helper@657fd0df35e4edfd7815efdae14ca44ea1e74897
         with:
           test-name: pwru-test
           image-version: ${{ matrix.kernel }}
@@ -113,7 +113,7 @@ jobs:
 
       - name: Fetch artifacts
         if: ${{ !success() }}
-        uses: cilium/little-vm-helper@0b7d7157dae56a44dc531c852e7756dc671071af
+        uses: cilium/little-vm-helper@657fd0df35e4edfd7815efdae14ca44ea1e74897
         with:
           provision: 'false'
           cmd: |