package/python-pymupdf: add missing python-zlib dependency

It turns out that python-pymupdf doesn't require zlib directly, but it
does require the zlib python module.

This fixes the following runtime error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.11/site-packages/fitz/__init__.py", line 22, in <module>
  File "/usr/lib/python3.11/site-packages/fitz/fitz.py", line 3402, in <module>
  File "/usr/lib/python3.11/gzip.py", line 9, in <module>
ModuleNotFoundError: No module named 'zlib'

Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-pymupdf/Config.in

@@ -7,7 +7,7 @@ config BR2_PACKAGE_PYTHON_PYMUPDF
 	select BR2_PACKAGE_HOST_SWIG
 	select BR2_PACKAGE_FREETYPE
 	select BR2_PACKAGE_MUPDF
-	select BR2_PACKAGE_ZLIB
+	select BR2_PACKAGE_PYTHON3_ZLIB # runtime
 	help
 	  Python bindings for the PDF rendering library MuPDF.
 

package/python-pymupdf/python-pymupdf.mk

@@ -12,7 +12,7 @@ PYTHON_PYMUPDF_SETUP_TYPE = setuptools
 PYTHON_PYMUPDF_LICENSE = AGPL-3.0+
 PYTHON_PYMUPDF_LICENSE_FILES = COPYING
 # No license file included in pip, but it's present on github
-PYTHON_PYMUPDF_DEPENDENCIES = freetype host-swig mupdf zlib
+PYTHON_PYMUPDF_DEPENDENCIES = freetype host-swig mupdf
 PYTHON_PYMUPDF_BUILD_OPTS = --skip-dependency-check
 
 PYTHON_PYMUPDF_ENV = CFLAGS="-I$(STAGING_DIR)/usr/include/mupdf -I$(STAGING_DIR)/usr/include/freetype2"