Bump pillow from 12.0.0 to 12.1.1 in /requirements

Bumps [pillow](https://github.com/python-pillow/Pillow) from 12.0.0 to 12.1.1.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@12.0.0...12.1.1)

---
updated-dependencies:
- dependency-name: pillow
  dependency-version: 12.1.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements/requirements-macos-latest-3.11.txt

@@ -322,7 +322,7 @@ patsy==1.0.2
     # via statsmodels
 pexpect==4.9.0
     # via ipython
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio

requirements/requirements-macos-latest-3.12.txt

@@ -320,7 +320,7 @@ patsy==1.0.2
     # via statsmodels
 pexpect==4.9.0
     # via ipython
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio

requirements/requirements-ubuntu-latest-3.11.txt

@@ -359,7 +359,7 @@ patsy==1.0.2
     # via statsmodels
 pexpect==4.9.0
     # via ipython
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio

requirements/requirements-ubuntu-latest-3.12.txt

@@ -357,7 +357,7 @@ patsy==1.0.2
     # via statsmodels
 pexpect==4.9.0
     # via ipython
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio

requirements/requirements-windows-latest-3.11.txt

@@ -323,7 +323,7 @@ pathspec==0.12.1
     #   mkdocs
 patsy==1.0.2
     # via statsmodels
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio

requirements/requirements-windows-latest-3.12.txt

@@ -321,7 +321,7 @@ pathspec==0.12.1
     #   mkdocs
 patsy==1.0.2
     # via statsmodels
-pillow==12.0.0
+pillow==12.1.1
     # via
     #   bokeh
     #   imageio