Release 0.28.0 #3166

Job	Run time
test_min_deps (ubuntu-latest)	36s
test_min_deps (windows-latest)	1m 11s
Integration Tests (pdm.lock)	23s
test (3.10, macos-latest)	1m 1s
test_min_deps (macos-latest)	1m 4s
Integration Tests (pdm.minimal.lock)	28s
test (3.11, windows-latest)	1m 32s
test (3.10, ubuntu-latest)	59s
test (3.13, ubuntu-latest)	1m 6s
test (3.10, windows-latest)	1m 33s
test (3.11, macos-latest)	39s
test (3.11, ubuntu-latest)	1m 0s
test (3.13, macos-latest)	42s
test (3.14, macos-latest)	1m 0s
test (3.12, ubuntu-latest)	1m 5s
test (3.14, windows-latest)	1m 36s
test (3.12, macos-latest)	1m 2s
test (3.14, ubuntu-latest)	1m 4s
test (3.13, windows-latest)	1m 47s
test (3.12, windows-latest)	1m 33s
Combine & check coverage	16s
	21m 37s

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