Add poetry.toml to .gitignore (#14807)

.gitignore

@@ -69,3 +69,6 @@ book/
 
 # Poetry will create a setup.py, which we don't want to include.
 /setup.py
+
+# Don't include users' poetry configs
+/poetry.toml

changelog.d/14807.misc

@@ -0,0 +1 @@
+Add local poetry config files (`poetry.toml`) to `.gitignore`.