Update changelog entry for weighted sampling #2762

Job	Run time
mypy	47s
pyright	21s
check-docs	32s
pathogen-repo-ci (dengue)	2m 40s
pathogen-repo-ci-v0 (avian-flu)	55s
pathogen-repo-ci (lassa)	41s
test (python=3.8 biopython=1.80)	10m 46s
pathogen-repo-ci-v0 (ebola)	58s
pathogen-repo-ci (measles)	1m 14s
test (python=3.8 biopython=latest)	11m 9s
pathogen-repo-ci-v0 (mumps)	55s
pathogen-repo-ci (mpox)	1m 13s
test (python=3.9 biopython=1.80)	12m 12s
pathogen-repo-ci-v0 (ncov)	1m 0s
pathogen-repo-ci (seasonal-cov)	1m 54s
test (python=3.9 biopython=latest)	11m 44s
pathogen-repo-ci-v0 (rsv)	8m 32s
pathogen-repo-ci (zika)	57s
test (python=3.10 biopython=1.80)	12m 8s
pathogen-repo-ci-v0 (seasonal-flu)	1m 3s
test (python=3.10 biopython=latest)	11m 42s
pathogen-repo-ci-v0 (tb)	1m 18s
test (python=3.11 biopython=1.80)	11m 42s
test (python=3.11 biopython=latest)	11m 55s
build-docs / build-conda	0s
build-docs / build-pip	2m 4s
codecov	14s
	2h 0m 36s

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