docs: update CHANGELOG.md

Author: bednar

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## 1.24.0 [unreleased]
 
+### Features
+1. [#356](https://github.com/influxdata/influxdb-client-python/pull/356): Add `MultiprocessingWriter` to write data in independent OS process
+
 ## 1.23.0 [2021-10-26]
 
 ### Deprecates

tests/test_MultiprocessingWriter.py

@@ -66,7 +66,6 @@ def test_pass_parameters(self):
 
         # write data
         with MultiprocessingWriter(url=self.url, token=self.token, org=self.org, write_options=SYNCHRONOUS) as writer:
-            print(f"write: {os.getpid()}")
             writer.write(bucket="my-bucket", record=f"mem_{unique},tag=a value=5i 10", write_precision=WritePrecision.S)
 
         # query data