Update build-system to set PY_SQLITE_ENABLE_LOAD_EXTENSION introduced in Python 3.11:

Related CPython commits:

• python/cpython@6a5104f4fa8 ("gh-95656: Enable the sqlite3 load extension API in Windows build (#95662)", 2022-08-04)
• python/cpython@29e5874d5a9 ("bpo-45774: Autoconfiscate SQLite detection (GH-29507)", 2021-11-19)
• python/cpython@e9594f6747e ("bpo-45731: Handle --enable-loadable-sqlite-extensions in configure (GH-29434)", 2021-11-06)

Related issues and pull requests:

• Add support for Python 3.10, 3.11, 3.12 and 3.13 #350
• Add support for building Python 3.11.x #387