devel/py-incremental: Add missing BUILD_DEPENDS and RUN_DEPENDS

• While I'm here, remove PY_SETUPTOOLS: py-setuptools should be used rather than PY_SETUPTOOLS
• Bump PORTREVISION for dependency change

from pyproject.toml:
]requires = [

1. Keep this aligned with the project dependencies. "setuptools >= 61.0", "tomli; python_version < '3.11'",

]
...
dependencies = [

"setuptools >= 61.0",
"tomli; python_version < '3.11'",

]

PR: 281850
Reported by: dim
Reference: https://github.com/twisted/incremental/blob/incremental-24.7.2/pyproject.toml#L2-L6

		https://github.com/twisted/incremental/blob/incremental-24.7.2/pyproject.toml#L31-L34

Approved by: portmgr (blanket)
With hat: python