Relax Pillow and OpenCV version bounds.

For Pillow, the change in commit

    e04e183 - chore: apply PIL major changes and increase min version specifier (#1237)

that does the `font.getsize()` -> `font.getbbox()` migration
is definitely already available in Pillow 9.2.0, see

https://pillow.readthedocs.io/en/stable/deprecations.html#font-size-and-offset-methods

> Deprecated since version 9.2.0.

pyproject.toml

@@ -38,15 +38,15 @@ dependencies = [
     "numpy>=1.16.0,<2.0.0",
     "scipy>=1.4.0,<2.0.0",
     "h5py>=3.1.0,<4.0.0",
-    "opencv-python>=4.5.0,<5.0.0",
+    "opencv-python>=4.7.0,<5.0.0",
     "pypdfium2>=4.0.0,<5.0.0",
     "pyclipper>=1.2.0,<2.0.0",
     "shapely>=1.6.0,<3.0.0",
     "langdetect>=1.0.9,<2.0.0",
     "rapidfuzz>=3.0.0,<4.0.0",
     "matplotlib>=3.1.0",
     "weasyprint>=55.0",
-    "Pillow>=10.0.0",
+    "Pillow>=9.2.0",
     "defusedxml>=0.7.0",
     "mplcursors>=0.3",
     "unidecode>=1.0.0",