chore: bump ccxt to 4.4.43 #1248

Job	Run time
build-linux-online	13m 54s
build-linux (ubuntu-20.04, 3.10)	13m 4s
build-windows (windows-latest, 3.10)	10m 46s
build-linux (ubuntu-20.04, 3.11)	11m 13s
build-windows (windows-latest, 3.11)	10m 25s
build-macos (macos-13, 3.10)	11m 1s
build-linux (ubuntu-20.04, 3.12)	12m 4s
build-windows (windows-latest, 3.12)	10m 1s
build-macos (macos-13, 3.11)	10m 49s
build-linux (ubuntu-22.04, 3.10)	12m 17s
build-macos (macos-13, 3.12)	9m 24s
build-linux (ubuntu-22.04, 3.11)	12m 6s
build-macos (macos-14, 3.10)	5m 13s
mypy-version-check	9s
build-linux (ubuntu-22.04, 3.12)	15m 56s
build-macos (macos-14, 3.11)	4m 16s
docs-check	17s
build-linux (ubuntu-24.04, 3.10)	12m 4s
build-macos (macos-14, 3.12)	4m 56s
build-linux (ubuntu-24.04, 3.11)	11m 14s
build-macos (macos-15, 3.10)	5m 0s
build-linux (ubuntu-24.04, 3.12)	12m 57s
pre-commit	40s
build-macos (macos-15, 3.11)	4m 15s
build-macos (macos-15, 3.12)	4m 12s
Build	15s
deploy-docker	0s
notify-complete	0s
Deploy Docker	0s
Publish Python 🐍 distribution 📦 to PyPI	0s
Publish Python 🐍 distribution 📦 to TestPyPI	0s
	3h 38m 28s

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