Use R2 bucket for duckdb libraries #4197

Job	Run time
check-java-publish-build (aarch64-unknown-linux-gnu, runs-on=28017184625/runner=arm64-medium/imag...	54s
Compat check / compat-test	3m 3s
check-java-publish-build (x86_64-unknown-linux-gnu, runs-on=28017184625/runner=amd64-medium/image...	47s
Python (wheel build)	5m 27s
Rust publish dry-run	25s
	10m 36s

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