CMake: bump version to 3.5 #103

Job	Run time
Build extension binaries / Generate matrix	26s
Build extension binaries / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	1m 25s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	2m 14s
Build extension binaries / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	1m 35s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	16m 40s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	1m 53s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	4m 20s
Build extension binaries / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	1m 34s
Build extension binaries / Windows (windows_amd64_rtools, x64-mingw-static)	16m 54s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	4m 15s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	4m 24s
Deploy extension binaries	0s
	55m 40s

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