chore(deps-dev): update tornado requirement from <7,>=6 to >=6.5.6,<7 (#1508)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: William Bergamin <wbergamin@slack-corp.com>

Author: dependabot[bot]

requirements/adapter_dev.txt

@@ -26,7 +26,8 @@ sanic>=25.3.0,<26; python_version>"3.8"
 
 starlette>=0.19.1,<0.45; python_version<"3.9"
 starlette>=0.49.3,<1; python_version>="3.9"
-tornado>=6,<7
+tornado>=6.2,<7; python_version<"3.9"
+tornado>=6.5.6,<7; python_version>="3.9"
 uvicorn<1                                # The oldest version can vary among Python runtime versions
 gunicorn>=23.0.0,<24
 websocket_client>=1.2.3,<2               # Socket Mode 3rd party implementation