single_version_only for actx.compile #1727

Job	Run time
Mypy	3m 8s
Documentation	3m 14s
Examples Conda Py3	2m 47s
Tests for downstream project meshmode	13m 10s
Pylint	3m 4s
Tests for downstream project grudge	11m 29s
Pytest Conda Py3 Intel	3m 35s
Pytest Conda Py3 POCL	3m 39s
Tests for downstream project mirgecom	5s
Tests for downstream project mirgecom_examples	5s
Ruff	5s
Typos	3s
	44m 24s

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