chore: bump gaussdb_pool package version to 1.0.3

Author: chenyunliang520

gaussdb_pool/pyproject.toml

@@ -7,7 +7,7 @@ name = "gaussdb-pool"
 description = "Connection Pool for GaussDB"
 
 # STOP AND READ! if you change:
-version = "1.0.2"
+version = "1.0.3"
 # also change:
 # - `docs/news_pool.rst` to declare this version current or unreleased