devel/py-azure-mgmt-reservations: Update to 2.3.0

• Update COMMENT
• Update WWW
• Add LICENSE_FILE
• Update version requirement of RUN_DEPENDS
• Sort RUN_DEPENDS
• Convert to USE_PYTHON=pep517
• Update pkg-descr

Changes: https://github.com/Azure/azure-sdk-for-python/releases

		https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/reservations/azure-mgmt-reservations/CHANGELOG.md