python-build: bump to 1.4.2

Notable changes since 1.4.0:

v1.4.1:
- Allow setting build constraints
- Fix pip hack workaround

v1.4.2:
- Ensure the uv installer uses the current version of Python,
  avoiding an issue if UV_PYTHON is set
- Fix _has_valid_outer_pip returning True when pip is missing,
  causing build to try using a non-existent pip instead of
  falling back to virtualenv

Link: https://github.com/pypa/build/blob/main/CHANGELOG.rst
Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/python/python-build/Makefile

@@ -8,11 +8,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=python-build
-PKG_VERSION:=1.4.0
+PKG_VERSION:=1.4.2
 PKG_RELEASE:=1
 
 PYPI_NAME:=build
-PKG_HASH:=f1b91b925aa322be454f8330c6fb48b465da993d1e7e7e6fa35027ec49f3c936
+PKG_HASH:=35b14e1ee329c186d3f08466003521ed7685ec15ecffc07e68d706090bf161d1
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE