fix: Remove non-existent CHANGELOG.md references from UV and Poetry templates #3104

Job	Run time
test_min_deps (windows-latest)	1m 12s
test_min_deps (ubuntu-latest)	44s
test_min_deps (macos-latest)	57s
Integration Tests (pdm.minimal.lock)	31s
Integration Tests (pdm.lock)	31s
test (3.10, windows-latest)	1m 35s
test (3.10, ubuntu-latest)	1m 12s
test (3.11, ubuntu-latest)	1m 7s
test (3.12, macos-latest)	1m 25s
test (3.10, macos-latest)	1m 25s
test (3.11, macos-latest)	44s
test (3.12, ubuntu-latest)	1m 13s
test (3.11, windows-latest)	1m 39s
test (3.12, windows-latest)	1m 43s
test (3.13, windows-latest)	1m 58s
test (3.13, macos-latest)	48s
test (3.14, macos-latest)	1m 15s
test (3.13, ubuntu-latest)	1m 18s
test (3.14, windows-latest)	1m 42s
test (3.14, ubuntu-latest)	1m 16s
Combine & check coverage	14s
	24m 29s

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