chore(action): use directly action_ref.

Signed-off-by: Federico Di Pierro <nierro92@gmail.com>

action.yml

@@ -26,33 +26,19 @@ outputs:
 runs:
   using: "composite"
   steps:
-    # If action_ref points to v0 or v0.3, expect to be on a tag,
-    # else expect that user passed either `main` or an hash.
-    - name: Fetch tag or hash to be used
-      shell: bash
-      working-directory: ${{ github.action_path }}
-      id: git
-      run: |
-        if [[ "$ACTION_REF" =~ ^v[0-9] ]]; then
-            GIT_VER=$(git tag --points-at HEAD)
-        else
-            GIT_VER=$ACTION_REF
-        fi
-        echo "git_ver=$GIT_VER" >> $GITHUB_OUTPUT
-      env:
-        ACTION_REF: ${{ github.action_ref }}
-
     - name: Generate vars yaml
       working-directory: ${{ github.action_path }}/ansible-playbooks
       shell: bash
       run: |
         cat > vars.yml <<EOF
         run_id: "id-${{ github.run_id }}"
         output_dir: "~/ansible_output_${{ github.run_id }}"
-        tag: "${{ steps.git.outputs.git_ver }}"
+        tag: "$ACTION_REF"
         repos:
           libs: {name: "falcosecurity-libs", repo: "https://github.com/${{ inputs.libsrepo }}.git", version: "${{ inputs.libsversion }}"}
         EOF
+      env:
+        ACTION_REF: ${{ github.action_ref }}
 
     - name: Bootstrap VMs
       working-directory: ${{ github.action_path }}/ansible-playbooks