add if to ci.yml

Author: driftregion

.github/workflows/ci.yml

@@ -29,7 +29,8 @@ jobs:
           bazel-bin/iso14229.c
 
     - name: release
-      uses: softprops/action-gh-release@v1
+      uses: softprops/action-gh-release@v3
+      if: startsWith(github.ref, 'refs/tags/')
       with:
         files: |
           bazel-bin/iso14229.h