Fix Path issues related to trailing slashes #20

Job	Run time
Build extension binaries / Generate matrix	24s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	10m 56s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	12m 20s
Build extension binaries / Windows	0s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	25m 16s
Build extension binaries / DuckDB-Wasm	0s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	11m 54s
Deploy extension binaries / Generate matrix	23s
Deploy extension binaries / Deploy (linux_amd64)	41s
Deploy extension binaries / Deploy (linux_amd64_gcc4)	37s
Deploy extension binaries / Deploy (osx_amd64)	1m 18s
Deploy extension binaries / Deploy (osx_arm64)	1m 23s
	1h 5m 12s

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