openPMD write: close file (#188)

ax3l · web-flow · commit ec866a131341 · 2023-10-12T06:53:47.000-07:00
diff --git a/lasy/utils/openpmd_output.py b/lasy/utils/openpmd_output.py
@@ -111,3 +111,4 @@ def write_to_openpmd_file(
     env.store_chunk(data)
 
     series.flush()
+    series.close()
