Fix Bug introduced by PR #151 (#152)

Author: abikouo

.github/actions/ansible_validate_changelog/action.yml

@@ -30,10 +30,19 @@ runs:
         pip install -U pyyaml
       shell: bash
 
-    - name: Validate changelog
+    - name: Validate changelog using custom paths
       run: >-
         python3 ${{ github.action_path }}/validate_changelog.py
         --ref ${{ inputs.base_ref }}
         --custom-paths ${{ inputs.custom_paths }}
       shell: bash
       working-directory: ${{ inputs.path }}
+      if: inputs.custom_paths != ''
+
+    - name: Validate changelog
+      run: >-
+        python3 ${{ github.action_path }}/validate_changelog.py
+        --ref ${{ inputs.base_ref }}
+      shell: bash
+      working-directory: ${{ inputs.path }}
+      if: inputs.custom_paths == ''