Bump eventlet from 0.39.1 to 0.40.3

Bumps [eventlet](https://github.com/eventlet/eventlet) from 0.39.1 to 0.40.3.
- [Changelog](https://github.com/eventlet/eventlet/blob/master/NEWS)
- [Commits](eventlet/eventlet@0.39.1...0.40.3)

---
updated-dependencies:
- dependency-name: eventlet
  dependency-version: 0.40.3
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -37,7 +37,7 @@ docopt==0.6.2
     # via notifications-python-client
 et-xmlfile==2.0.0
     # via openpyxl
-eventlet==0.39.1
+eventlet==0.40.3
     # via gunicorn
 fido2==1.1.3
     # via -r requirements.in

requirements_for_test.txt

@@ -68,7 +68,7 @@ et-xmlfile==2.0.0
     # via
     #   -r requirements.txt
     #   openpyxl
-eventlet==0.39.1
+eventlet==0.40.3
     # via
     #   -r requirements.txt
     #   gunicorn