Update requirements.txt

Author: rcpeene

requirements.txt

@@ -16,7 +16,7 @@ numpy==1.26
 nwbwidgets
 ophys-nway-matching @ git+https://github.com/AllenInstitute/ophys_nway_matching@545504ab55922717ab623f8ede2c521a60aa1458
 pandas==1.5.2
-Pillow==9.3.0
+Pillow==11
 pynwb==2.6.0
 quantities==0.14.1
 remfile==0.1.10