v2.13.6: Feb 18 2025

### Security

- [CVE-2025-24928] Fix stack-buffer-overflow in xmlSnprintfElements
- [CVE-2024-56171] Fix use-after-free after xmlSchemaItemListAdd
- pattern: Fix compilation of explicit child axis

### Regressions

- xmllint: Support compressed input from stdin
- uri: Fix handling of Windows drive letters
- reader: Fix return value of xmlTextReaderReadString again
- SAX2: Fix xmlSAX2ResolveEntity if systemId is NULL

### Portability

- dict: Handle ENOSYS from getentropy gracefully
- Fix compilation with uclibc (Dario Binacchi)
- python: Declare init func with PyMODINIT_FUNC
- tests: Fix sanitizer version check on old Apple clang
- cmake: Work around broken sys/random.h in old macOS SDKs

### Build

- autotools: Set AC_CONFIG_AUX_DIR
- cmake: Always build Python module as shared library
- cmake: add missing `Bcrypt` link on Windows (Saleem Abdulrasool)
- cmake: Fix compatibility in package version file


- xmlIO: Fix reading from non-regular files like pipes
- xmlreader: Fix return value of xmlTextReaderReadString
- parser: Fix loading of parameter entities in external DTDs
- parser: Fix downstream code that swaps DTDs
- parser: Fix detection of duplicate attributes
- string: Fix va_copy fallback
- xpath: Fix parsing of non-ASCII names