docs(changelog): update for v3.3.7 #43

Job	Run time
verify / Go Tests	1m 3s
verify / Performance Benchmark (synthetic 10k, local baseline)	1m 7s
verify / Image Size Regression (BASE-04 ≤ 2GB)	1m 17s
verify / Web Build	19s
create-release	10s
build-binaries (linux, arm64)	28s
build-binaries (linux, amd64)	31s
build-binaries (darwin, amd64)	31s
build-binaries (darwin, arm64)	27s
publish-images / build (admin, deploy/docker/admin/Dockerfile, .)	44s
publish-images / build (managed-user, deploy/docker/managed-user/Dockerfile, .)	3m 43s
publish-images / build (sing-box-gateway, deploy/docker/sing-box-gateway/Dockerfile, .)	29s
publish-images / build (control-plane, deploy/docker/control-plane/Dockerfile, .)	8m 28s
update-homebrew	10s
	19m 27s

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