Support policy for 2.0-2.4: #1000

Job	Run time
Linux.2: Debug / steps	23m 52s
Linux.1: Release / steps	13m 43s
Linux.3: static / steps	13m 46s
Linux.4: threads=OFF / steps	12m 39s
Linux.6: custom namespace / steps	12m 56s
Linux.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal deflate / steps	4m 5s
Linux.7: clang / steps	13m 57s
Linux.8: vfx2023 / steps	13m 35s
macOS.1: Release / steps	7m 26s
macOS.2: Debug / steps	18m 45s
macOS.3: static / steps	8m 11s
macOS.4: threads=OFF / steps	6m 57s
macOS.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal imath+deflate / steps	1m 5s
Windows.1: Release / steps	12m 45s
macOS.6: macos-13 / steps	18m 19s
Windows.2: Debug / steps	39m 16s
Windows.3: static / steps	12m 17s
Windows.4: threads=OFF / steps	13m 25s
Windows.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal imath+deflate / steps	1m 28s
Windows.6: vfx2022 / steps	12m 59s
	4h 21m 26s

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