[email-rotation] automatically add rotation(s) (#8)

This updates rotations with the result of running
`./email-rotation/extend_rotation.py --ensure-weeks=16`.

Author: gburgessiv

email-rotation/rotation.yaml

@@ -50,3 +50,11 @@ rotations:
   - mrragava
   - DimitryAndric
   start_time: '2026-01-18T00:00:00+00:00'
+- members:
+  - emaste
+  - gburgessiv
+  start_time: '2026-02-01T00:00:00+00:00'
+- members:
+  - cuviper
+  - kbeyls
+  start_time: '2026-02-15T00:00:00+00:00'