Port away from PKGMETA.yml

mingw-w64-python-diff-match-patch/PKGBUILD

@@ -8,6 +8,9 @@ pkgrel=2
 pkgdesc='A high-performance library in multiple languages that manipulates plain text (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64' 'clang32')
+msys2_references=(
+  'pypi: diff-match-patch'
+)
 license=('spdx:Apache-2.0')
 url='https://github.com//diff-match-patch-python/diff-match-patch'
 depends=("${MINGW_PACKAGE_PREFIX}-python")