(fix) Use GITHUB_ACTION_PATH in action.yml

Author: axel-op

action.yml

@@ -17,14 +17,14 @@ runs:
     - name: Package for Google Cloud Functions
       if: inputs.faas-provider == 'gcloud'
       working-directory: ${{ inputs.working-directory }}
-      run: package-gcloud.sh
+      run: ${GITHUB_ACTION_PATH}/package-gcloud.sh
       shell: bash
       env:
         DEPLOYMENT_DIR: deployment
     - name: Package for Azure Functions
       if: inputs.faas-provider == 'azure'
       working-directory: ${{ inputs.working-directory }}
-      run: package-azure.sh
+      run: ${GITHUB_ACTION_PATH}/package-azure.sh
       shell: bash
       env:
         APP_NAME: ${{ inputs.function-name }}