Add post-action cleanup step to remove CLI binary (#12)

Add a cleanup step with `if: always()` to remove the downloaded
linear-release binary after execution.

Co-authored-by: Tom Moor <380914+tommoor@users.noreply.github.com>

Author: tommoor

action.yml

@@ -73,3 +73,8 @@ runs:
         INPUT_STAGE: ${{ inputs.stage }}
         INPUT_INCLUDE_PATHS: ${{ inputs.include_paths }}
         INPUT_LOG_LEVEL: ${{ inputs.log_level }}
+
+    - name: Cleanup CLI binary
+      if: always()
+      shell: bash
+      run: rm -f "${{ github.action_path }}/linear-release"